PATENT DOCUMENT

Publication Number: US-12216754-B2
Application Number: US-202217732222-A
Country: US
Kind Code: B2

Title: User interfaces for authenticating to perform secure operations

Abstract:
The present disclosure generally relates to methods and user interfaces for authentication, including providing authentication at a computer system in accordance with some embodiments.

Claims:
What is claimed is: 
     
       1. A computer system configured to communicate with one or more biometric sensors, one or more input devices, and an external accessory device, the computer system comprising:
 one or more processors; and 
 memory storing one or more programs configured to be executed by the one or more processors, the one or more programs including instructions for:
 receiving, via the one or more input devices, a request to unlock the computer system while the computer system is in a locked state; 
 in response to receiving the request to unlock the computer system:
 in accordance with a determination that a first set of biometric identification criteria is satisfied, wherein the first set of biometric identification criteria is satisfied when a detected biometric feature detected in conjunction with the request to unlock the computer system is consistent with an enrolled biometric feature, transitioning the computer system from the locked state to an unlocked state; and 
 in accordance with a determination that a second set of biometric identification criteria is satisfied without satisfying the first set of biometric identification criteria, wherein the second set of biometric identification criteria is satisfied when the detected biometric feature detected in conjunction with the request to unlock the computer system is partially consistent with the enrolled biometric feature, causing an output of a prompt that indicates that one or more interactions with the external accessory device can be used to unlock the computer system; and 
 
 after causing the output of the prompt:
 in accordance with a determination that the one or more interactions with the external accessory device have been detected, transitioning the computer system from the locked state to the unlocked state; and 
 in accordance with a determination that the one or more interactions with the external accessory device have not been detected, maintaining the computer system in the locked state. 
 
 
 
     
     
       2. The computer system of  claim 1 , the one or more programs further including instructions for:
 after transitioning the computer system from the locked state to the unlocked state, receiving, via the one or more input devices, a request to perform a secure operation; 
 in response to receiving the request to perform the secure operation:
 in accordance with a determination that the first set of biometric identification criteria is satisfied, performing the secure operation; and 
 in accordance with a determination that the second set of biometric identification criteria are satisfied without satisfying the first set of biometric identification criteria, causing a second output of a second prompt that indicates that a second one or more interactions with the external accessory device can be used to perform the secure operation; and 
 after causing the second output of the second prompt:
 in accordance with a determination that the second one or more interactions with the external accessory device have been detected, performing the secure operation; and 
 in accordance with a determination that the second one or more interactions with the external accessory device have not been detected, forgoing performing the secure operation. 
 
 
 
     
     
       3. The computer system of  claim 1 , wherein the second set of biometric identification criteria includes a criterion that is satisfied when a gaze of a user directed toward a predetermined portion of the computer system has been detected. 
     
     
       4. The computer system of  claim 1 , wherein:
 the computer system is in communication with a first output device; and 
 causing the output of the prompt includes outputting the prompt via the first output device. 
 
     
     
       5. The computer system of  claim 1 , wherein causing the output of the prompt includes transmitting one or more instructions that cause the external accessory device to output the prompt. 
     
     
       6. The computer system of  claim 1 , wherein the computer system is not a wearable device. 
     
     
       7. The computer system of  claim 1 , wherein the external accessory device is a wearable device. 
     
     
       8. The computer system of  claim 1 , wherein the enrolled biometric feature includes data corresponding to a face or a fingerprint. 
     
     
       9. The computer system of  claim 1 , wherein the one or more interactions include a gesture on a touch-sensitive surface of the external accessory device. 
     
     
       10. The computer system of  claim 1 , wherein the one or more interactions include actuation of a hardware input element that is located on the external accessory device. 
     
     
       11. The computer system of  claim 1 , wherein the one or more interactions include a compressing gesture on the external accessory device. 
     
     
       12. The computer system of  claim 1 , wherein the one or more interactions include the computer system and the external accessory device transmitting data via a near-field communication protocol. 
     
     
       13. The computer system of  claim 1 , wherein the one or more interactions include a first interaction that is detected by the one or more input devices of the computer system and a second interaction detected at the external accessory device. 
     
     
       14. The computer system of  claim 1 , wherein the one or more interactions is an interaction that is detected when a determination is made that the computer system and the external accessory device have physically touched. 
     
     
       15. The computer system of  claim 1 , wherein the one or more interactions include a motion gesture that is performed with the external accessory device. 
     
     
       16. The computer system of  claim 1 , the one or more programs further including instructions for:
 in accordance with a determination that the second set of biometric identification criteria and the first set of biometric identification criteria are not satisfied, maintaining the computer system in the locked state without causing the output of the prompt. 
 
     
     
       17. The computer system of  claim 1 , wherein, in accordance with the determination that the one or more interactions with the external accessory device have been detected, transitioning the computer system from the locked state to the unlocked state includes:
 in accordance with a determination that the one or more interactions with the external accessory device satisfy a set of respective criteria, providing limited access privileges to a user of the computer system. 
 
     
     
       18. A non-transitory computer-readable storage medium storing one or more programs configured to be executed by one or more processors of a computer system that is in communication with one or more biometric sensors, one or more input devices, and an external accessory device, the one or more programs including instructions for:
 receiving, via the one or more input devices, a request to unlock the computer system while the computer system is in a locked state; 
 in response to receiving the request to unlock the computer system: 
 in accordance with a determination that a first set of biometric identification criteria is satisfied, wherein the first set of biometric identification criteria is satisfied when a detected biometric feature detected in conjunction with the request to unlock the computer system is consistent with an enrolled biometric feature, transitioning the computer system from the locked state to an unlocked state; and 
 in accordance with a determination that a second set of biometric identification criteria is satisfied without satisfying the first set of biometric identification criteria, wherein the second set of biometric identification criteria is satisfied when the detected biometric feature detected in conjunction with the request to unlock the computer system is partially consistent with the enrolled biometric feature, causing an output of a prompt that indicates that one or more interactions with the external accessory device can be used to unlock the computer system; and 
 after causing the output of the prompt: 
 in accordance with a determination that the one or more interactions with the external accessory device have been detected, transitioning the computer system from the locked state to the unlocked state; and 
 in accordance with a determination that the one or more interactions with the external accessory device have not been detected, maintaining the computer system in the locked state. 
 
     
     
       19. A method, comprising: at a computer system that is in communication with one or more biometric sensors, one or more input devices, and an external accessory device:
 receiving, via the one or more input devices, a request to unlock the computer system while the computer system is in a locked state; 
 in response to receiving the request to unlock the computer system: 
 in accordance with a determination that a first set of biometric identification criteria is satisfied, wherein the first set of biometric identification criteria is satisfied when a detected biometric feature detected in conjunction with the request to unlock the computer system is consistent with an enrolled biometric feature, transitioning the computer system from the locked state to an unlocked state; and 
 in accordance with a determination that a second set of biometric identification criteria is satisfied without satisfying the first set of biometric identification criteria, wherein the second set of biometric identification criteria is satisfied when the detected biometric feature detected in conjunction with the request to unlock the computer system is partially consistent with the enrolled biometric feature, causing an output of a prompt that indicates that one or more interactions with the external accessory device can be used to unlock the computer system; and 
 after causing the output of the prompt: 
 in accordance with a determination that the one or more interactions with the external accessory device have been detected, transitioning the computer system from the locked state to the unlocked state; and 
 in accordance with a determination that the one or more interactions with the external accessory device have not been detected, maintaining the computer system in the locked state. 
 
     
     
       20. The non-transitory computer-readable storage medium of  claim 18 , the one or more programs further including instructions for:
 after transitioning the computer system from the locked state to the unlocked state, receiving, via the one or more input devices, a request to perform a secure operation; 
 in response to receiving the request to perform the secure operation:
 in accordance with a determination that the first set of biometric identification criteria is satisfied, performing the secure operation; and 
 in accordance with a determination that the second set of biometric identification criteria are satisfied without satisfying the first set of biometric identification criteria, causing a second output of a second prompt that indicates that a second one or more interactions with the external accessory device can be used to perform the secure operation; and 
 after causing the second output of the second prompt:
 in accordance with a determination that the second one or more interactions with the external accessory device have been detected, performing the secure operation; and 
 in accordance with a determination that the second one or more interactions with the external accessory device have not been detected, forgoing performing the secure operation. 
 
 
 
     
     
       21. The non-transitory computer-readable storage medium of  claim 18 , wherein the second set of biometric identification criteria includes a criterion that is satisfied when a gaze of a user directed toward a predetermined portion of the computer system has been detected. 
     
     
       22. The non-transitory computer-readable storage medium of  claim 18 , wherein:
 the computer system is in communication with a first output device; and 
 causing the output of the prompt includes outputting the prompt via the first output device. 
 
     
     
       23. The non-transitory computer-readable storage medium of  claim 18 , wherein causing the output of the prompt includes transmitting one or more instructions that cause the external accessory device to output the prompt. 
     
     
       24. The non-transitory computer-readable storage medium of  claim 18 , wherein the computer system is not a wearable device. 
     
     
       25. The non-transitory computer-readable storage medium of  claim 18 , wherein the external accessory device is a wearable device. 
     
     
       26. The non-transitory computer-readable storage medium of  claim 18 , wherein the enrolled biometric feature includes data corresponding to a face or a fingerprint. 
     
     
       27. The non-transitory computer-readable storage medium of  claim 18 , wherein the one or more interactions include a gesture on a touch-sensitive surface of the external accessory device. 
     
     
       28. The non-transitory computer-readable storage medium of  claim 18 , wherein the one or more interactions include actuation of a hardware input element that is located on the external accessory device. 
     
     
       29. The non-transitory computer-readable storage medium of  claim 18 , wherein the one or more interactions include a compressing gesture on the external accessory device. 
     
     
       30. The non-transitory computer-readable storage medium of  claim 18 , wherein the one or more interactions include the computer system and the external accessory device transmitting data via a near-field communication protocol. 
     
     
       31. The non-transitory computer-readable storage medium of  claim 18 , wherein the one or more interactions include a first interaction that is detected by the one or more input devices of the computer system and a second interaction detected at the external accessory device. 
     
     
       32. The non-transitory computer-readable storage medium of  claim 18 , wherein the one or more interactions is an interaction that is detected when a determination is made that the computer system and the external accessory device have physically touched. 
     
     
       33. The non-transitory computer-readable storage medium of  claim 18 , wherein the one or more interactions include a motion gesture that is performed with the external accessory device. 
     
     
       34. The non-transitory computer-readable storage medium of  claim 18 , the one or more programs further including instructions for:
 in accordance with a determination that the second set of biometric identification criteria and the first set of biometric identification criteria are not satisfied, maintaining the computer system in the locked state without causing the output of the prompt. 
 
     
     
       35. The non-transitory computer-readable storage medium of  claim 18 , wherein, in accordance with the determination that the one or more interactions with the external accessory device have been detected, transitioning the computer system from the locked state to the unlocked state includes:
 in accordance with a determination that the one or more interactions with the external accessory device satisfy a set of respective criteria, providing limited access privileges to a user of the computer system. 
 
     
     
       36. The method of  claim 19 , further comprising:
 after transitioning the computer system from the locked state to the unlocked state, receiving, via the one or more input devices, a request to perform a secure operation; 
 in response to receiving the request to perform the secure operation:
 in accordance with a determination that the first set of biometric identification criteria is satisfied, performing the secure operation; and 
 in accordance with a determination that the second set of biometric identification criteria are satisfied without satisfying the first set of biometric identification criteria, causing a second output of a second prompt that indicates that a second one or more interactions with the external accessory device can be used to perform the secure operation; and 
 after causing the second output of the second prompt:
 in accordance with a determination that the second one or more interactions with the external accessory device have been detected, performing the secure operation; and 
 in accordance with a determination that the second one or more interactions with the external accessory device have not been detected, forgoing performing the secure operation. 
 
 
 
     
     
       37. The method of  claim 19 , wherein the second set of biometric identification criteria includes a criterion that is satisfied when a gaze of a user directed toward a predetermined portion of the computer system has been detected. 
     
     
       38. The method of  claim 19 , wherein:
 the computer system is in communication with a first output device; and 
 causing the output of the prompt includes outputting the prompt via the first output device. 
 
     
     
       39. The method of  claim 19 , wherein causing the output of the prompt includes transmitting one or more instructions that cause the external accessory device to output the prompt. 
     
     
       40. The method of  claim 19 , wherein the computer system is not a wearable device. 
     
     
       41. The method of  claim 19 , wherein the external accessory device is a wearable device. 
     
     
       42. The method of  claim 19 , wherein the enrolled biometric feature includes data corresponding to a face or a fingerprint. 
     
     
       43. The method of  claim 19 , wherein the one or more interactions include a gesture on a touch-sensitive surface of the external accessory device. 
     
     
       44. The method of  claim 19 , wherein the one or more interactions include actuation of a hardware input element that is located on the external accessory device. 
     
     
       45. The method of  claim 19 , wherein the one or more interactions include a compressing gesture on the external accessory device. 
     
     
       46. The method of  claim 19 , wherein the one or more interactions include the computer system and the external accessory device transmitting data via a near-field communication protocol. 
     
     
       47. The method of  claim 19 , wherein the one or more interactions include a first interaction that is detected by the one or more input devices of the computer system and a second interaction detected at the external accessory device. 
     
     
       48. The method of  claim 19 , wherein the one or more interactions is an interaction that is detected when a determination is made that the computer system and the external accessory device have physically touched. 
     
     
       49. The method of  claim 19 , wherein the one or more interactions include a motion gesture that is performed with the external accessory device. 
     
     
       50. The method of  claim 19 , further comprising:
 in accordance with a determination that the second set of biometric identification criteria and the first set of biometric identification criteria are not satisfied, maintaining the computer system in the locked state without causing the output of the prompt. 
 
     
     
       51. The method of  claim 19 , wherein, in accordance with the determination that the one or more interactions with the external accessory device have been detected, transitioning the computer system from the locked state to the unlocked state includes:
 in accordance with a determination that the one or more interactions with the external accessory device satisfy a set of respective criteria, providing limited access privileges to a user of the computer system.

Description:
CROSS-REFERENCE TO RELATED APPLICATIONS 
     This application claims priority to U.S. Provisional Patent Application Ser. No. 63/186,694, entitled “USER INTERFACES FOR AUTHENTICATING TO PERFORM SECURE OPERATIONS,” filed on May 10, 2021, the contents of which is hereby incorporated by reference in its entirety. 
    
    
     FIELD 
     The present disclosure generally relates to authentication and, more specifically, to computer user interfaces and techniques for providing one or more alternative authentication methods after a first authentication method (e.g., biometric authentication) is unsuccessful. 
     BACKGROUND 
     Biometric authentication, for instance, of a face, iris, or fingerprint, using electronic devices is a convenient, efficient, and secure method of authenticating users of electronic devices. Biometric authentication allows a device to quickly, easily, and securely verify the identity of any number of users. 
     BRIEF SUMMARY 
     Some techniques for implementing authentication using computer systems (e.g., electronic computing devices), however, are generally cumbersome and inefficient. For example, some existing techniques use a complex and time-consuming user interface, which may include multiple key presses or keystrokes. Existing techniques require more time than necessary, wasting user time and device energy. This latter consideration is particularly important in battery-operated devices. 
     Accordingly, the present technique provides electronic devices with faster, more efficient methods and interfaces for implementing authentication. Such methods and interfaces optionally complement or replace other methods for implementing authentication. Such methods and interfaces reduce the cognitive burden on a user and produce a more efficient human-machine interface. For battery-operated computing devices, such methods and interfaces conserve power and increase the time between battery charges. 
     In accordance with some embodiments, a method performed at a computer system that is in communication with one or more biometric sensors, one or more input devices, and an external accessory device is described. The method comprises receiving, via the one or more input devices, a request to unlock the computer system while the computer system is in a locked state; in response to receiving the request to unlock the computer system: in accordance with a determination that a first set of biometric identification criteria is satisfied, wherein the first set of biometric identification criteria is satisfied when a detected biometric feature detected in conjunction with the request to unlock the computer system is consistent with an enrolled biometric feature, transitioning the computer system from the locked state to an unlocked state; and in accordance with a determination that a second set of biometric identification criteria is satisfied without satisfying the first set of biometric identification criteria, wherein the second set of biometric identification criteria is satisfied when the detected biometric feature detected in conjunction with the request to unlock the computer system is partially consistent with an enrolled biometric feature, causing an output of a prompt that indicates that one or more interactions with the external accessory device can be used to unlock the computer system; and after causing the output of the prompt: in accordance with a determination that the one or more interactions with the external accessory device have been detected, transitioning the computer system from the locked state to the unlocked state; and in accordance with a determination that the one or more interactions with the external accessory device have not been detected, maintaining the computer system in the locked state. 
     In accordance with some embodiments, a non-transitory computer-readable storage medium is described. The non-transitory computer-readable storage medium stores one or more programs configured to be executed by one or more processors of a computer system that is in communication with one or more biometric sensors, one or more input devices, and an external accessory device, the one or more programs including instructions for: receiving, via the one or more input devices, a request to unlock the computer system while the computer system is in a locked state; in response to receiving the request to unlock the computer system: in accordance with a determination that a first set of biometric identification criteria is satisfied, wherein the first set of biometric identification criteria is satisfied when a detected biometric feature detected in conjunction with the request to unlock the computer system is consistent with an enrolled biometric feature, transitioning the computer system from the locked state to an unlocked state; and in accordance with a determination that a second set of biometric identification criteria is satisfied without satisfying the first set of biometric identification criteria, wherein the second set of biometric identification criteria is satisfied when the detected biometric feature detected in conjunction with the request to unlock the computer system is partially consistent with an enrolled biometric feature, causing an output of a prompt that indicates that one or more interactions with the external accessory device can be used to unlock the computer system; and after causing the output of the prompt: in accordance with a determination that the one or more interactions with the external accessory device have been detected, transitioning the computer system from the locked state to the unlocked state; and in accordance with a determination that the one or more interactions with the external accessory device have not been detected, maintaining the computer system in the locked state. 
     In accordance with some embodiments, a transitory computer-readable storage medium is described. The transitory computer-readable storage medium stores one or more programs configured to be executed by one or more processors of a computer system that is in communication with one or more biometric sensors, one or more input devices, and an external accessory device, the one or more programs including instructions for: receiving, via the one or more input devices, a request to unlock the computer system while the computer system is in a locked state; in response to receiving the request to unlock the computer system: in accordance with a determination that a first set of biometric identification criteria is satisfied, wherein the first set of biometric identification criteria is satisfied when a detected biometric feature detected in conjunction with the request to unlock the computer system is consistent with an enrolled biometric feature, transitioning the computer system from the locked state to an unlocked state; and in accordance with a determination that a second set of biometric identification criteria is satisfied without satisfying the first set of biometric identification criteria, wherein the second set of biometric identification criteria is satisfied when the detected biometric feature detected in conjunction with the request to unlock the computer system is partially consistent with an enrolled biometric feature, causing an output of a prompt that indicates that one or more interactions with the external accessory device can be used to unlock the computer system; and after causing the output of the prompt: in accordance with a determination that the one or more interactions with the external accessory device have been detected, transitioning the computer system from the locked state to the unlocked state; and in accordance with a determination that the one or more interactions with the external accessory device have not been detected, maintaining the computer system in the locked state. 
     In accordance with some embodiments, a computer system is described. The computer system is in communication with one or more biometric sensors, one or more input devices, an external accessory device; and memory storing one or more programs configured to be executed by the one or more processors, the one or more programs including instructions for: receiving, via the one or more input devices, a request to unlock the computer system while the computer system is in a locked state; in response to receiving the request to unlock the computer system: in accordance with a determination that a first set of biometric identification criteria is satisfied, wherein the first set of biometric identification criteria is satisfied when a detected biometric feature detected in conjunction with the request to unlock the computer system is consistent with an enrolled biometric feature, transitioning the computer system from the locked state to an unlocked state; and in accordance with a determination that a second set of biometric identification criteria is satisfied without satisfying the first set of biometric identification criteria, wherein the second set of biometric identification criteria is satisfied when the detected biometric feature detected in conjunction with the request to unlock the computer system is partially consistent with an enrolled biometric feature, causing an output of a prompt that indicates that one or more interactions with the external accessory device can be used to unlock the computer system; and after causing the output of the prompt: in accordance with a determination that the one or more interactions with the external accessory device have been detected, transitioning the computer system from the locked state to the unlocked state; and in accordance with a determination that the one or more interactions with the external accessory device have not been detected, maintaining the computer system in the locked state. 
     In accordance with some embodiments, a computer system is described. The computer system is in communication with: one or more biometric sensors; one or more input devices; and an external accessory device is described. The computer system comprises: means for receiving, via the one or more input devices, a request to unlock the computer system while the computer system is in a locked state: means, responsive to receiving the request to unlock the computer system, for: in accordance with a determination that a first set of biometric identification criteria is satisfied, wherein the first set of biometric identification criteria is satisfied when a detected biometric feature detected in conjunction with the request to unlock the computer system is consistent with an enrolled biometric feature, transitioning the computer system from the locked state to an unlocked state; and in accordance with a determination that a second set of biometric identification criteria is satisfied without satisfying the first set of biometric identification criteria, wherein the second set of biometric identification criteria is satisfied when the detected biometric feature detected in conjunction with the request to unlock the computer system is partially consistent with an enrolled biometric feature, causing an output of a prompt that indicates that one or more interactions with the external accessory device can be used to unlock the computer system; and means, after causing the output of the prompt, for: in accordance with a determination that the one or more interactions with the external accessory device have been detected, transitioning the computer system from the locked state to the unlocked state; and in accordance with a determination that the one or more interactions with the external accessory device have not been detected, maintaining the computer system in the locked state. 
     In accordance with some embodiments, a method performed at a computer system that is in communication with one or more biometric sensors and one or more input devices that include a voice input device is described. The method comprises receiving, via the one or more input devices, a request to unlock the computer system while the computer system is in a locked state; in response to receiving the request to unlock the computer system: in accordance with a determination that a first set of biometric identification criteria is satisfied, wherein the first set of biometric identification criteria is satisfied when a detected biometric feature detected in conjunction with the request to unlock the computer system is consistent with an enrolled biometric feature, transitioning the computer system from the locked state to an unlocked state; and in accordance with a determination that a second set of biometric identification criteria is satisfied without satisfying the first set of biometric identification criteria, wherein the second set of biometric identification criteria is satisfied when the detected biometric feature detected in conjunction with the request to unlock the computer system is partially consistent with an enrolled biometric feature, causing an output of a prompt that indicates that voice input is required to unlock the computer system; after causing the output of the prompt, receiving, via the voice input device, an indication that voice input has been detected; and in response to receiving the indication that voice input has been detected: in accordance with a determination that the detected voice input matches an authorized voice profile, transitioning the computer system from the locked state to the unlocked state; and in accordance with a determination that the detected voice input does not match the authorized voice profile, maintaining the computer system in the locked state. 
     In accordance with some embodiments, a non-transitory computer-readable storage medium is described. The non-transitory computer readable storage medium stores one or more programs configured to be executed by one or more processors of a computer system that is in communication with one or more biometric sensors, one or more input devices that include a voice input device, the one or more programs including instructions for: receiving, via the one or more input devices, a request to unlock the computer system while the computer system is in a locked state; in response to receiving the request to unlock the computer system: in accordance with a determination that a first set of biometric identification criteria is satisfied, wherein the first set of biometric identification criteria is satisfied when a detected biometric feature detected in conjunction with the request to unlock the computer system is consistent with an enrolled biometric feature, transitioning the computer system from the locked state to an unlocked state; and in accordance with a determination that a second set of biometric identification criteria is satisfied without satisfying the first set of biometric identification criteria, wherein the second set of biometric identification criteria is satisfied when the detected biometric feature detected in conjunction with the request to unlock the computer system is partially consistent with an enrolled biometric feature, causing an output of a prompt that indicates that voice input is required to unlock the computer system; after causing the output of the prompt, receiving, via the voice input device, an indication that voice input has been detected: and in response to receiving the indication that voice input has been detected: in accordance with a determination that the detected voice input matches an authorized voice profile, transitioning the computer system from the locked state to the unlocked state; and in accordance with a determination that the detected voice input does not match the authorized voice profile, maintaining the computer system in the locked state. 
     In accordance with some embodiments, a transitory computer-readable storage medium is described. The transitory computer readable storage medium stores one or more programs configured to be executed by one or more processors of a computer system that is in communication with one or more biometric sensors, one or more input devices that include a voice input device, the one or more programs including instructions for: receiving, via the one or more input devices, a request to unlock the computer system while the computer system is in a locked state; in response to receiving the request to unlock the computer system: in accordance with a determination that a first set of biometric identification criteria is satisfied, wherein the first set of biometric identification criteria is satisfied when a detected biometric feature detected in conjunction with the request to unlock the computer system is consistent with an enrolled biometric feature, transitioning the computer system from the locked state to an unlocked state; and in accordance with a determination that a second set of biometric identification criteria is satisfied without satisfying the first set of biometric identification criteria, wherein the second set of biometric identification criteria is satisfied when the detected biometric feature detected in conjunction with the request to unlock the computer system is partially consistent with an enrolled biometric feature, causing an output of a prompt that indicates that voice input is required to unlock the computer system; after causing the output of the prompt, receiving, via the voice input device, an indication that voice input has been detected; and in response to receiving the indication that voice input has been detected: in accordance with a determination that the detected voice input matches an authorized voice profile, transitioning the computer system from the locked state to the unlocked state; and in accordance with a determination that the detected voice input does not match the authorized voice profile, maintaining the computer system in the locked state. 
     In accordance with some embodiments, a computer system is described. The computer system is in communication with one or more biometric sensors, one or more input devices that include a voice input device; and memory storing one or more programs configured to be executed by the one or more processors, the one or more programs including instructions for: receiving, via the one or more input devices, a request to unlock the computer system while the computer system is in a locked state; in response to receiving the request to unlock the computer system: in accordance with a determination that a first set of biometric identification criteria is satisfied, wherein the first set of biometric identification criteria is satisfied when a detected biometric feature detected in conjunction with the request to unlock the computer system is consistent with an enrolled biometric feature, transitioning the computer system from the locked state to an unlocked state; and in accordance with a determination that a second set of biometric identification criteria is satisfied without satisfying the first set of biometric identification criteria, wherein the second set of biometric identification criteria is satisfied when the detected biometric feature detected in conjunction with the request to unlock the computer system is partially consistent with an enrolled biometric feature, causing an output of a prompt that indicates that voice input is required to unlock the computer system; after causing the output of the prompt, receiving, via the voice input device, an indication that voice input has been detected; and in response to receiving the indication that voice input has been detected: in accordance with a determination that the detected voice input matches an authorized voice profile, transitioning the computer system from the locked state to the unlocked state; and in accordance with a determination that the detected voice input does not match the authorized voice profile, maintaining the computer system in the locked state. 
     In accordance with some embodiments, a computer system is described. The computer system is communication with one or more biometric sensors, and one or more input devices that include a voice input device. The computer system comprises: means for receiving, via the one or more input devices, a request to unlock the computer system while the computer system is in a locked state; means, responsive to receiving the request to unlock the computer system, for: in accordance with a determination that a first set of biometric identification criteria is satisfied, wherein the first set of biometric identification criteria is satisfied when a detected biometric feature detected in conjunction with the request to unlock the computer system is consistent with an enrolled biometric feature, transitioning the computer system from the locked state to an unlocked state; and in accordance with a determination that a second set of biometric identification criteria is satisfied without satisfying the first set of biometric identification criteria, wherein the second set of biometric identification criteria is satisfied when the detected biometric feature detected in conjunction with the request to unlock the computer system is partially consistent with an enrolled biometric feature, causing an output of a prompt that indicates that voice input is required to unlock the computer system; means, after causing the output of the prompt, for receiving, via the voice input device, an indication that voice input has been detected; and means, responsive to receiving the indication that voice input has been detected, for: in accordance with a determination that the detected voice input matches an authorized voice profile, transitioning the computer system from the locked state to the unlocked state; and in accordance with a determination that the detected voice input does not match the authorized voice profile, maintaining the computer system in the locked state. 
     Executable instructions for performing these functions are, optionally, included in a non-transitory computer-readable storage medium or other computer program product configured for execution by one or more processors. Executable instructions for performing these functions are, optionally, included in a transitory computer-readable storage medium or other computer program product configured for execution by one or more processors. 
     Thus, devices are provided with faster, more efficient methods and interfaces for implementing authentication, thereby increasing the effectiveness, efficiency, and user satisfaction with such devices. Such methods and interfaces may complement or replace other methods for implementing authentication. 
    
    
     
       DESCRIPTION OF THE FIGURES 
       For a better understanding of the various described embodiments, reference should be made to the Description of Embodiments below, in conjunction with the following drawings in which like reference numerals refer to corresponding parts throughout the figures. 
         FIG.  1 A  is a block diagram illustrating a portable multifunction device with a touch-sensitive display in accordance with some embodiments. 
         FIG.  1 B  is a block diagram illustrating exemplary components for event handling in accordance with some embodiments. 
         FIG.  2    illustrates a portable multifunction device having a touch screen in accordance with some embodiments. 
         FIG.  3    is a block diagram of an exemplary multifunction device with a display and a touch-sensitive surface in accordance with some embodiments. 
         FIG.  4 A  illustrates an exemplary user interface for a menu of applications on a portable multifunction device in accordance with some embodiments. 
         FIG.  4 B  illustrates an exemplary user interface for a multifunction device with a touch-sensitive surface that is separate from the display in accordance with some embodiments. 
         FIG.  5 A  illustrates a personal electronic device in accordance with some embodiments. 
         FIG.  5 B  is a block diagram illustrating a personal electronic device in accordance with some embodiments. 
         FIGS.  5 C- 5 D  illustrate exemplary components of a personal electronic device having a touch-sensitive display and intensity sensors in accordance with some embodiments. 
         FIGS.  5 E- 5 H  illustrate exemplary components and user interfaces of a personal electronic device in accordance with some embodiments. 
         FIG.  6    illustrates exemplary devices connected via one or more communication channels in accordance with some embodiments. 
         FIGS.  7 A- 7 V  illustrate exemplary user interfaces for providing authentication at a computer system in accordance with some embodiments. 
         FIGS.  8 A- 8 D  illustrate exemplary user interfaces for providing authentication at a computer system in accordance with some embodiments. 
         FIGS.  9 A- 9 D  illustrate exemplary user interfaces for providing authentication at a computer system in accordance with some embodiments. 
         FIGS.  10 A- 10 D  illustrate exemplary user interfaces for providing authentication at a computer system in accordance with some embodiments. 
         FIGS.  11 A- 11 D  illustrate exemplary user interfaces for providing authentication at a computer system in accordance with some embodiments. 
         FIGS.  12 A- 12 D  illustrate exemplary user interfaces for providing authentication at a computer system in accordance with some embodiments. 
         FIGS.  13 A- 13 F  illustrate exemplary user interfaces for providing authentication at a computer system in accordance with some embodiments. 
         FIGS.  14 A- 14 B  are a flow diagram illustrating a method for providing biometric authentication at a computer system in accordance with some embodiments. 
         FIGS.  15 A- 15 B  are a flow diagram illustrating a method for providing biometric authentication at a computer system in accordance with some embodiments. 
     
    
    
     DESCRIPTION OF EMBODIMENTS 
     The following description sets forth exemplary methods, parameters, and the like. It should be recognized, however, that such description is not intended as a limitation on the scope of the present disclosure but is instead provided as a description of exemplary embodiments. 
     There is a need for electronic devices that provide efficient methods and interfaces for implementing authentication. For example, there is a need for electronic devices to authenticate one or more users after biometric authentication is unsuccessful. Such techniques can reduce the cognitive burden on a user who wants to perform a secure operation after one or more authentication techniques are successful, thereby enhancing productivity. Further, such techniques can reduce processor and battery power otherwise wasted on redundant user inputs. 
     Below,  FIGS.  1 A- 1 B ,  FIG.  2   ,  FIG.  3   ,  FIGS.  4 A- 4 B ,  FIGS.  5 A- 5 H , and  FIG.  6    provide a description of exemplary devices for performing the techniques for implementing authentication. 
       FIGS.  7 A- 7 V  illustrate exemplary user interfaces for providing authentication at a computer system in accordance with some embodiments.  FIGS.  8 A- 8 D  illustrate exemplary user interfaces for providing authentication at a computer system in accordance with some embodiments.  FIGS.  9 A- 9 D  illustrate exemplary user interfaces for providing authentication at a computer system in accordance with some embodiments.  FIGS.  10 A- 10 D  illustrate exemplary user interfaces for providing authentication at a computer system in accordance with some embodiments.  FIGS.  11 A- 11 D  illustrate exemplary user interfaces for providing authentication at a computer system in accordance with some embodiments.  FIGS.  12 A- 12 D  illustrate exemplary user interfaces for providing authentication at a computer system in accordance with some embodiments.  FIGS.  13 A- 13 F  illustrate exemplary user interfaces for providing authentication at a computer system in accordance with some embodiments.  FIGS.  14 A- 14 B  are a flow diagram illustrating a method for providing biometric authentication at a computer system in accordance with some embodiments.  FIGS.  15 A- 15 B  are a flow diagram illustrating a method for providing biometric authentication at a computer system in accordance with some embodiments. The user interfaces in  FIGS.  7 A- 7 V ,  FIGS.  8 A- 8 D ,  FIGS.  9 A- 9 D ,  FIGS.  10 A- 10 D ,  FIGS.  11 A- 11 D ,  FIGS.  12 A- 12 D , and  FIGS.  13 A- 13 F  are used to illustrate the processes described below, including the processes in  FIGS.  14 A- 14 B  and  FIGS.  15 A- 15 B . 
     In addition, in methods described herein where one or more steps are contingent upon one or more conditions having been met, it should be understood that the described method can be repeated in multiple repetitions so that over the course of the repetitions all of the conditions upon which steps in the method are contingent have been met in different repetitions of the method. For example, if a method requires performing a first step if a condition is satisfied and a second step if the condition is not satisfied, then a person of ordinary skill would appreciate that the claimed steps are repeated until the condition has been both satisfied and not satisfied, in no particular order. Thus, a method described with one or more steps that are contingent upon one or more conditions having been met could be rewritten as a method that is repeated until each of the conditions described in the method has been met. This, however, is not required of system or computer readable medium claims where the system or computer readable medium contains instructions for performing the contingent operations based on the satisfaction of the corresponding one or more conditions and, thus, is capable of determining whether the contingency has or has not been satisfied without explicitly repeating steps of a method until all of the conditions upon which steps in the method are contingent have been met. A person having ordinary skill in the art would also understand that, similar to a method with contingent steps, a system or computer readable storage medium can repeat the steps of a method as many times as are needed to ensure that all of the contingent steps have been performed. 
     Although the following description uses terms “first,” “second,” etc. to describe various elements, these elements should not be limited by the terms. These terms are only used to distinguish one element from another. For example, a first touch could be termed a second touch, and, similarly, a second touch could be termed a first touch, without departing from the scope of the various described embodiments. The first touch and the second touch are both touches, but they are not the same touch. 
     The terminology used in the description of the various described embodiments herein is for the purpose of describing particular embodiments only and is not intended to be limiting. As used in the description of the various described embodiments and the appended claims, the singular forms “a,” “an,” and “the” are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will also be understood that the term “and/or” as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items. It will be further understood that the terms “includes,” “including,” “comprises,” and/or “comprising,” when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. 
     The term “if” is, optionally, construed to mean “when” or “upon” or “in response to determining” or “in response to detecting,” depending on the context. Similarly, the phrase “if it is determined” or “if [a stated condition or event] is detected” is, optionally, construed to mean “upon determining” or “in response to determining” or “upon detecting [the stated condition or event]” or “in response to detecting [the stated condition or event],” depending on the context. 
     Embodiments of electronic devices, user interfaces for such devices, and associated processes for using such devices are described. In some embodiments, the device is a portable communications device, such as a mobile telephone, that also contains other functions, such as PDA and/or music player functions. Exemplary embodiments of portable multifunction devices include, without limitation, the iPhone®, iPod Touch®, and iPad® devices from Apple Inc. of Cupertino, California Other portable electronic devices, such as laptops or tablet computers with touch-sensitive surfaces (e.g., touch screen displays and/or touchpads), are, optionally, used. It should also be understood that, in some embodiments, the device is not a portable communications device, but is a desktop computer with a touch-sensitive surface (e.g., a touch screen display and/or a touchpad). In some embodiments, the electronic device is a computer system that is in communication (e.g., via wireless communication, via wired communication) with a display generation component. The display generation component is configured to provide visual output, such as display via a CRT display, display via an LED display, or display via image projection. In some embodiments, the display generation component is integrated with the computer system. In some embodiments, the display generation component is separate from the computer system. As used herein, “displaying” content includes causing to display the content (e.g., video data rendered or decoded by display controller  156 ) by transmitting, via a wired or wireless connection, data (e.g., image data or video data) to an integrated or external display generation component to visually produce the content. 
     In the discussion that follows, an electronic device that includes a display and a touch-sensitive surface is described. It should be understood, however, that the electronic device optionally includes one or more other physical user-interface devices, such as a physical keyboard, a mouse, and/or a joystick. 
     The device typically supports a variety of applications, such as one or more of the following: a drawing application, a presentation application, a word processing application, a website creation application, a disk authoring application, a spreadsheet application, a gaming application, a telephone application, a video conferencing application, an e-mail application, an instant messaging application, a workout support application, a photo management application, a digital camera application, a digital video camera application, a web browsing application, a digital music player application, and/or a digital video player application. 
     The various applications that are executed on the device optionally use at least one common physical user-interface device, such as the touch-sensitive surface. One or more functions of the touch-sensitive surface as well as corresponding information displayed on the device are, optionally, adjusted and/or varied from one application to the next and/or within a respective application. In this way, a common physical architecture (such as the touch-sensitive surface) of the device optionally supports the variety of applications with user interfaces that are intuitive and transparent to the user. 
     Attention is now directed toward embodiments of portable devices with touch-sensitive displays.  FIG.  1 A  is a block diagram illustrating portable multifunction device  100  with touch-sensitive display system  112  in accordance with some embodiments. Touch-sensitive display  112  is sometimes called a “touch screen” for convenience and is sometimes known as or called a “touch-sensitive display system.” Device  100  includes memory  102  (which optionally includes one or more computer-readable storage mediums), memory controller  122 , one or more processing units (CPUs)  120 , peripherals interface  118 , RF circuitry  108 , audio circuitry  110 , speaker  111 , microphone  113 , input/output (I/O) subsystem  106 , other input control devices  116 , and external port  124 . Device  100  optionally includes one or more optical sensors  164 . Device  100  optionally includes one or more contact intensity sensors  165  for detecting intensity of contacts on device  100  (e.g., a touch-sensitive surface such as touch-sensitive display system  112  of device  100 ). Device  100  optionally includes one or more tactile output generators  167  for generating tactile outputs on device  100  (e.g., generating tactile outputs on a touch-sensitive surface such as touch-sensitive display system  112  of device  100  or touchpad  355  of device  300 ). These components optionally communicate over one or more communication buses or signal lines  103 . 
     As used in the specification and claims, the term “intensity” of a contact on a touch-sensitive surface refers to the force or pressure (force per unit area) of a contact (e.g., a finger contact) on the touch-sensitive surface, or to a substitute (proxy) for the force or pressure of a contact on the touch-sensitive surface. The intensity of a contact has a range of values that includes at least four distinct values and more typically includes hundreds of distinct values (e.g., at least 256). Intensity of a contact is, optionally, determined (or measured) using various approaches and various sensors or combinations of sensors. For example, one or more force sensors underneath or adjacent to the touch-sensitive surface are, optionally, used to measure force at various points on the touch-sensitive surface. In some implementations, force measurements from multiple force sensors are combined (e.g., a weighted average) to determine an estimated force of a contact. Similarly, a pressure-sensitive tip of a stylus is, optionally, used to determine a pressure of the stylus on the touch-sensitive surface. Alternatively, the size of the contact area detected on the touch-sensitive surface and/or changes thereto, the capacitance of the touch-sensitive surface proximate to the contact and/or changes thereto, and/or the resistance of the touch-sensitive surface proximate to the contact and/or changes thereto are, optionally, used as a substitute for the force or pressure of the contact on the touch-sensitive surface. In some implementations, the substitute measurements for contact force or pressure are used directly to determine whether an intensity threshold has been exceeded (e.g., the intensity threshold is described in units corresponding to the substitute measurements). In some implementations, the substitute measurements for contact force or pressure are converted to an estimated force or pressure, and the estimated force or pressure is used to determine whether an intensity threshold has been exceeded (e.g., the intensity threshold is a pressure threshold measured in units of pressure). Using the intensity of a contact as an attribute of a user input allows for user access to additional device functionality that may otherwise not be accessible by the user on a reduced-size device with limited real estate for displaying affordances (e.g., on a touch-sensitive display) and/or receiving user input (e.g., via a touch-sensitive display, a touch-sensitive surface, or a physical/mechanical control such as a knob or a button). 
     As used in the specification and claims, the term “tactile output” refers to physical displacement of a device relative to a previous position of the device, physical displacement of a component (e.g., a touch-sensitive surface) of a device relative to another component (e.g., housing) of the device, or displacement of the component relative to a center of mass of the device that will be detected by a user with the user&#39;s sense of touch. For example, in situations where the device or the component of the device is in contact with a surface of a user that is sensitive to touch (e.g., a finger, palm, or other part of a user&#39;s hand), the tactile output generated by the physical displacement will be interpreted by the user as a tactile sensation corresponding to a perceived change in physical characteristics of the device or the component of the device. For example, movement of a touch-sensitive surface (e.g., a touch-sensitive display or trackpad) is, optionally, interpreted by the user as a “down click” or “up click” of a physical actuator button. In some cases, a user will feel a tactile sensation such as an “down click” or “up click” even when there is no movement of a physical actuator button associated with the touch-sensitive surface that is physically pressed (e.g., displaced) by the user&#39;s movements. As another example, movement of the touch-sensitive surface is, optionally, interpreted or sensed by the user as “roughness” of the touch-sensitive surface, even when there is no change in smoothness of the touch-sensitive surface. While such interpretations of touch by a user will be subject to the individualized sensory perceptions of the user, there are many sensory perceptions of touch that are common to a large majority of users. Thus, when a tactile output is described as corresponding to a particular sensory perception of a user (e.g., an “up click,” a “down click,” “roughness”), unless otherwise stated, the generated tactile output corresponds to physical displacement of the device or a component thereof that will generate the described sensory perception for a typical (or average) user. 
     It should be appreciated that device  100  is only one example of a portable multifunction device, and that device  100  optionally has more or fewer components than shown, optionally combines two or more components, or optionally has a different configuration or arrangement of the components. The various components shown in  FIG.  1 A  are implemented in hardware, software, or a combination of both hardware and software, including one or more signal processing and/or application-specific integrated circuits. 
     Memory  102  optionally includes high-speed random access memory and optionally also includes non-volatile memory, such as one or more magnetic disk storage devices, flash memory devices, or other non-volatile solid-state memory devices. Memory controller  122  optionally controls access to memory  102  by other components of device  100 . 
     Peripherals interface  118  can be used to couple input and output peripherals of the device to CPU  120  and memory  102 . The one or more processors  120  run or execute various software programs (such as computer programs (e.g., including instructions)) and/or sets of instructions stored in memory  102  to perform various functions for device  100  and to process data. In some embodiments, peripherals interface  118 , CPU  120 , and memory controller  122  are, optionally, implemented on a single chip, such as chip  104 . In some other embodiments, they are, optionally, implemented on separate chips. 
     RF (radio frequency) circuitry  108  receives and sends RF signals, also called electromagnetic signals. RF circuitry  108  converts electrical signals to/from electromagnetic signals and communicates with communications networks and other communications devices via the electromagnetic signals. RF circuitry  108  optionally includes well-known circuitry for performing these functions, including but not limited to an antenna system, an RF transceiver, one or more amplifiers, a tuner, one or more oscillators, a digital signal processor, a CODEC chipset, a subscriber identity module (SIM) card, memory, and so forth. RF circuitry  108  optionally communicates with networks, such as the Internet, also referred to as the World Wide Web (WWW), an intranet and/or a wireless network, such as a cellular telephone network, a wireless local area network (LAN) and/or a metropolitan area network (MAN), and other devices by wireless communication. The RF circuitry  108  optionally includes well-known circuitry for detecting near field communication (NFC) fields, such as by a short-range communication radio. The wireless communication optionally uses any of a plurality of communications standards, protocols, and technologies, including but not limited to Global System for Mobile Communications (GSM), Enhanced Data GSM Environment (EDGE), high-speed downlink packet access (HSDPA), high-speed uplink packet access (HSUPA), Evolution, Data-Only (EV-DO), HSPA, HSPA+, Dual-Cell HSPA (DC-HSPDA), long term evolution (LTE), near field communication (NFC), wideband code division multiple access (W-CDMA), code division multiple access (CDMA), time division multiple access (TDMA), Bluetooth, Bluetooth Low Energy (BTLE), Wireless Fidelity (Wi-Fi) (e.g., IEEE 802.11a, IEEE 802.11b, IEEE 802.11g, IEEE 802.11n, and/or IEEE 802.11ac), voice over Internet Protocol (VoIP), Wi-MAX, a protocol for e-mail (e.g., Internet message access protocol (IMAP) and/or post office protocol (POP)), instant messaging (e.g., extensible messaging and presence protocol (XMPP), Session Initiation Protocol for Instant Messaging and Presence Leveraging Extensions (SIMPLE), Instant Messaging and Presence Service (IMPS)), and/or Short Message Service (SMS), or any other suitable communication protocol, including communication protocols not yet developed as of the filing date of this document. 
     Audio circuitry  110 , speaker  111 , and microphone  113  provide an audio interface between a user and device  100 . Audio circuitry  110  receives audio data from peripherals interface  118 , converts the audio data to an electrical signal, and transmits the electrical signal to speaker  111 . Speaker  111  converts the electrical signal to human-audible sound waves. Audio circuitry  110  also receives electrical signals converted by microphone  113  from sound waves. Audio circuitry  110  converts the electrical signal to audio data and transmits the audio data to peripherals interface  118  for processing. Audio data is, optionally, retrieved from and/or transmitted to memory  102  and/or RF circuitry  108  by peripherals interface  118 . In some embodiments, audio circuitry  110  also includes a headset jack (e.g.,  212 ,  FIG.  2   ). The headset jack provides an interface between audio circuitry  110  and removable audio input/output peripherals, such as output-only headphones or a headset with both output (e.g., a headphone for one or both ears) and input (e.g., a microphone). 
     I/O subsystem  106  couples input/output peripherals on device  100 , such as touch screen  112  and other input control devices  116 , to peripherals interface  118 . I/O subsystem  106  optionally includes display controller  156 , optical sensor controller  158 , depth camera controller  169 , intensity sensor controller  159 , haptic feedback controller  161 , and one or more input controllers  160  for other input or control devices. The one or more input controllers  160  receive/send electrical signals from/to other input control devices  116 . The other input control devices  116  optionally include physical buttons (e.g., push buttons, rocker buttons, etc.), dials, slider switches, joysticks, click wheels, and so forth. In some embodiments, input controller(s)  160  are, optionally, coupled to any (or none) of the following: a keyboard, an infrared port, a USB port, and a pointer device such as a mouse. The one or more buttons (e.g.,  208 ,  FIG.  2   ) optionally include an up/down button for volume control of speaker  111  and/or microphone  113 . The one or more buttons optionally include a push button (e.g.,  206 ,  FIG.  2   ). In some embodiments, the electronic device is a computer system that is in communication (e.g., via wireless communication, via wired communication) with one or more input devices. In some embodiments, the one or more input devices include a touch-sensitive surface (e.g., a trackpad, as part of a touch-sensitive display). In some embodiments, the one or more input devices include one or more camera sensors (e.g., one or more optical sensors  164  and/or one or more depth camera sensors  175 ), such as for tracking a user&#39;s gestures (e.g., hand gestures) as input. In some embodiments, the one or more input devices are integrated with the computer system. In some embodiments, the one or more input devices are separate from the computer system. 
     A quick press of the push button optionally disengages a lock of touch screen  112  or optionally begins a process that uses gestures on the touch screen to unlock the device, as described in U.S. patent application Ser. No. 11/322,549, “Unlocking a Device by Performing Gestures on an Unlock Image,” filed Dec. 23, 2005, U.S. Pat. No. 7,657,849, which is hereby incorporated by reference in its entirety. A longer press of the push button (e.g.,  206 ) optionally turns power to device  100  on or off. The functionality of one or more of the buttons are, optionally, user-customizable. Touch screen  112  is used to implement virtual or soft buttons and one or more soft keyboards. 
     Touch-sensitive display  112  provides an input interface and an output interface between the device and a user. Display controller  156  receives and/or sends electrical signals from/to touch screen  112 . Touch screen  112  displays visual output to the user. The visual output optionally includes graphics, text, icons, video, and any combination thereof (collectively termed “graphics”). In some embodiments, some or all of the visual output optionally corresponds to user-interface objects. 
     Touch screen  112  has a touch-sensitive surface, sensor, or set of sensors that accepts input from the user based on haptic and/or tactile contact. Touch screen  112  and display controller  156  (along with any associated modules and/or sets of instructions in memory  102 ) detect contact (and any movement or breaking of the contact) on touch screen  112  and convert the detected contact into interaction with user-interface objects (e.g., one or more soft keys, icons, web pages, or images) that are displayed on touch screen  112 . In an exemplary embodiment, a point of contact between touch screen  112  and the user corresponds to a finger of the user. 
     Touch screen  112  optionally uses LCD (liquid crystal display) technology, LPD (light emitting polymer display) technology, or LED (light emitting diode) technology, although other display technologies are used in other embodiments. Touch screen  112  and display controller  156  optionally detect contact and any movement or breaking thereof using any of a plurality of touch sensing technologies now known or later developed, including but not limited to capacitive, resistive, infrared, and surface acoustic wave technologies, as well as other proximity sensor arrays or other elements for determining one or more points of contact with touch screen  112 . In an exemplary embodiment, projected mutual capacitance sensing technology is used, such as that found in the iPhone® and iPod Touch® from Apple Inc. of Cupertino, California 
     A touch-sensitive display in some embodiments of touch screen  112  is, optionally, analogous to the multi-touch sensitive touchpads described in the following U.S. Pat. No. 6,323,846 (Westerman et al.), U.S. Pat. No. 6,570,557 (Westerman et al.), and/or U.S. Pat. No. 6,677,932 (Westerman), and/or U.S. Patent Publication 2002/0015024A1, each of which is hereby incorporated by reference in its entirety. However, touch screen  112  displays visual output from device  100 , whereas touch-sensitive touchpads do not provide visual output. 
     A touch-sensitive display in some embodiments of touch screen  112  is described in the following applications: (1) U.S. patent application Ser. No. 11/381,313, “Multipoint Touch Surface Controller,” filed May 2, 2006; (2) U.S. patent application Ser. No. 10/840,862, “Multipoint Touchscreen,” filed May 6, 2004; (3) U.S. patent application Ser. No. 10/903,964, “Gestures For Touch Sensitive Input Devices,” filed Jul. 30, 2004; (4) U.S. patent application Ser. No. 11/048,264, “Gestures For Touch Sensitive Input Devices,” filed Jan. 31, 2005; (5) U.S. patent application Ser. No. 11/038,590, “Mode-Based Graphical User Interfaces For Touch Sensitive Input Devices,” filed Jan. 18, 2005, (6) U.S. patent application Ser. No. 11/228,758, “Virtual Input Device Placement On A Touch Screen User Interface,” filed Sep. 16, 2005; (7) U.S. patent application Ser. No. 11/228,700, “Operation Of A Computer With A Touch Screen Interface,” filed Sep. 16, 2005; (8) U.S. patent application Ser. No. 11/228,737, “Activating Virtual Keys Of A Touch-Screen Virtual Keyboard,” filed Sep. 16, 2005; and (9) U.S. patent application Ser. No. 11/367,749, “Multi-Functional Hand-Held Device,” filed Mar. 3, 2006. All of these applications are incorporated by reference herein in their entirety. 
     Touch screen  112  optionally has a video resolution in excess of 100 dpi. In some embodiments, the touch screen has a video resolution of approximately 160 dpi. The user optionally makes contact with touch screen  112  using any suitable object or appendage, such as a stylus, a finger, and so forth. In some embodiments, the user interface is designed to work primarily with finger-based contacts and gestures, which can be less precise than stylus-based input due to the larger area of contact of a finger on the touch screen. In some embodiments, the device translates the rough finger-based input into a precise pointer/cursor position or command for performing the actions desired by the user. 
     In some embodiments, in addition to the touch screen, device  100  optionally includes a touchpad for activating or deactivating particular functions. In some embodiments, the touchpad is a touch-sensitive area of the device that, unlike the touch screen, does not display visual output. The touchpad is, optionally, a touch-sensitive surface that is separate from touch screen  112  or an extension of the touch-sensitive surface formed by the touch screen. 
     Device  100  also includes power system  162  for powering the various components. Power system  162  optionally includes a power management system, one or more power sources (e.g., battery, alternating current (AC)), a recharging system, a power failure detection circuit, a power converter or inverter, a power status indicator (e.g., a light-emitting diode (LED)) and any other components associated with the generation, management and distribution of power in portable devices. 
     Device  100  optionally also includes one or more optical sensors  164 .  FIG.  1 A  shows an optical sensor coupled to optical sensor controller  158  in I/O subsystem  106 . Optical sensor  164  optionally includes charge-coupled device (CCD) or complementary metal-oxide semiconductor (CMOS) phototransistors. Optical sensor  164  receives light from the environment, projected through one or more lenses, and converts the light to data representing an image. In conjunction with imaging module  143  (also called a camera module), optical sensor  164  optionally captures still images or video. In some embodiments, an optical sensor is located on the back of device  100 , opposite touch screen display  112  on the front of the device so that the touch screen display is enabled for use as a viewfinder for still and/or video image acquisition. In some embodiments, an optical sensor is located on the front of the device so that the user&#39;s image is, optionally, obtained for video conferencing while the user views the other video conference participants on the touch screen display. In some embodiments, the position of optical sensor  164  can be changed by the user (e.g., by rotating the lens and the sensor in the device housing) so that a single optical sensor  164  is used along with the touch screen display for both video conferencing and still and/or video image acquisition. 
     Device  100  optionally also includes one or more depth camera sensors  175 .  FIG.  1 A  shows a depth camera sensor coupled to depth camera controller  169  in I/O subsystem  106 . Depth camera sensor  175  receives data from the environment to create a three dimensional model of an object (e.g., a face) within a scene from a viewpoint (e.g., a depth camera sensor). In some embodiments, in conjunction with imaging module  143  (also called a camera module), depth camera sensor  175  is optionally used to determine a depth map of different portions of an image captured by the imaging module  143 . In some embodiments, a depth camera sensor is located on the front of device  100  so that the user&#39;s image with depth information is, optionally, obtained for video conferencing while the user views the other video conference participants on the touch screen display and to capture selfies with depth map data. In some embodiments, the depth camera sensor  175  is located on the back of device, or on the back and the front of the device  100 . In some embodiments, the position of depth camera sensor  175  can be changed by the user (e.g., by rotating the lens and the sensor in the device housing) so that a depth camera sensor  175  is used along with the touch screen display for both video conferencing and still and/or video image acquisition. 
     In some embodiments, a depth map (e.g., depth map image) contains information (e.g., values) that relates to the distance of objects in a scene from a viewpoint (e.g., a camera, an optical sensor, a depth camera sensor). In one embodiment of a depth map, each depth pixel defines the position in the viewpoint&#39;s Z-axis where its corresponding two-dimensional pixel is located. In some embodiments, a depth map is composed of pixels wherein each pixel is defined by a value (e.g., 0-255). For example, the “0” value represents pixels that are located at the most distant place in a “three dimensional” scene and the “255” value represents pixels that are located closest to a viewpoint (e.g., a camera, an optical sensor, a depth camera sensor) in the “three dimensional” scene. In other embodiments, a depth map represents the distance between an object in a scene and the plane of the viewpoint. In some embodiments, the depth map includes information about the relative depth of various features of an object of interest in view of the depth camera (e.g., the relative depth of eyes, nose, mouth, ears of a user&#39;s face). In some embodiments, the depth map includes information that enables the device to determine contours of the object of interest in a z direction. 
     Device  100  optionally also includes one or more contact intensity sensors  165 .  FIG.  1 A  shows a contact intensity sensor coupled to intensity sensor controller  159  in I/O subsystem  106 . Contact intensity sensor  165  optionally includes one or more piezoresistive strain gauges, capacitive force sensors, electric force sensors, piezoelectric force sensors, optical force sensors, capacitive touch-sensitive surfaces, or other intensity sensors (e.g., sensors used to measure the force (or pressure) of a contact on a touch-sensitive surface). Contact intensity sensor  165  receives contact intensity information (e.g., pressure information or a proxy for pressure information) from the environment. In some embodiments, at least one contact intensity sensor is collocated with, or proximate to, a touch-sensitive surface (e.g., touch-sensitive display system  112 ). In some embodiments, at least one contact intensity sensor is located on the back of device  100 , opposite touch screen display  112 , which is located on the front of device  100 . 
     Device  100  optionally also includes one or more proximity sensors  166 .  FIG.  1 A  shows proximity sensor  166  coupled to peripherals interface  118 . Alternately, proximity sensor  166  is, optionally, coupled to input controller  160  in I/O subsystem  106 . Proximity sensor  166  optionally performs as described in U.S. patent application Ser. No. 11/241,839, “Proximity Detector In Handheld Device”; Ser. No. 11/240,788, “Proximity Detector In Handheld Device”, Ser. No. 11/620,702, “Using Ambient Light Sensor To Augment Proximity Sensor Output”; Ser. No. 11/586,862, “Automated Response To And Sensing Of User Activity In Portable Devices”; and Ser. No. 11/638,251, “Methods And Systems For Automatic Configuration Of Peripherals,” which are hereby incorporated by reference in their entirety. In some embodiments, the proximity sensor turns off and disables touch screen  112  when the multifunction device is placed near the user&#39;s ear (e.g., when the user is making a phone call). 
     Device  100  optionally also includes one or more tactile output generators  167 .  FIG.  1 A  shows a tactile output generator coupled to haptic feedback controller  161  in I/O subsystem  106 . Tactile output generator  167  optionally includes one or more electroacoustic devices such as speakers or other audio components and/or electromechanical devices that convert energy into linear motion such as a motor, solenoid, electroactive polymer, piezoelectric actuator, electrostatic actuator, or other tactile output generating component (e.g., a component that converts electrical signals into tactile outputs on the device). Contact intensity sensor  165  receives tactile feedback generation instructions from haptic feedback module  133  and generates tactile outputs on device  100  that are capable of being sensed by a user of device  100 . In some embodiments, at least one tactile output generator is collocated with, or proximate to, a touch-sensitive surface (e.g., touch-sensitive display system  112 ) and, optionally, generates a tactile output by moving the touch-sensitive surface vertically (e.g., in/out of a surface of device  100 ) or laterally (e.g., back and forth in the same plane as a surface of device  100 ). In some embodiments, at least one tactile output generator sensor is located on the back of device  100 , opposite touch screen display  112 , which is located on the front of device  100 . 
     Device  100  optionally also includes one or more accelerometers  168 .  FIG.  1 A  shows accelerometer  168  coupled to peripherals interface  118 . Alternately, accelerometer  168  is, optionally, coupled to an input controller  160  in I/O subsystem  106 . Accelerometer  168  optionally performs as described in U.S. Patent Publication No. 20050190059, “Acceleration-based Theft Detection System for Portable Electronic Devices,” and U.S. Patent Publication No. 20060017692, “Methods And Apparatuses For Operating A Portable Device Based On An Accelerometer,” both of which are incorporated by reference herein in their entirety. In some embodiments, information is displayed on the touch screen display in a portrait view or a landscape view based on an analysis of data received from the one or more accelerometers. Device  100  optionally includes, in addition to accelerometer(s)  168 , a magnetometer and a GPS (or GLONASS or other global navigation system) receiver for obtaining information concerning the location and orientation (e.g., portrait or landscape) of device  100 . 
     In some embodiments, the software components stored in memory  102  include operating system  126 , communication module (or set of instructions)  128 , contact/motion module (or set of instructions)  130 , graphics module (or set of instructions)  132 , text input module (or set of instructions)  134 , Global Positioning System (GPS) module (or set of instructions)  135 , and applications (or sets of instructions)  136 . Furthermore, in some embodiments, memory  102  ( FIG.  1 A ) or  370  ( FIG.  3   ) stores device/global internal state  157 , as shown in  FIGS.  1 A and  3   . Device/global internal state  157  includes one or more of: active application state, indicating which applications, if any, are currently active; display state, indicating what applications, views or other information occupy various regions of touch screen display  112 ; sensor state, including information obtained from the device&#39;s various sensors and input control devices  116 ; and location information concerning the device&#39;s location and/or attitude. 
     Operating system  126  (e.g., Darwin, RTXC, LINUX, UNIX, OS X, iOS, WINDOWS, or an embedded operating system such as VxWorks) includes various software components and/or drivers for controlling and managing general system tasks (e.g., memory management, storage device control, power management, etc.) and facilitates communication between various hardware and software components. 
     Communication module  128  facilitates communication with other devices over one or more external ports  124  and also includes various software components for handling data received by RF circuitry  108  and/or external port  124 . External port  124  (e.g., Universal Serial Bus (USB), FIREWIRE, etc.) is adapted for coupling directly to other devices or indirectly over a network (e.g., the Internet, wireless LAN, etc.). In some embodiments, the external port is a multi-pin (e.g., 30-pin) connector that is the same as, or similar to and/or compatible with, the 30-pin connector used on iPod® (trademark of Apple Inc.) devices. 
     Contact/motion module  130  optionally detects contact with touch screen  112  (in conjunction with display controller  156 ) and other touch-sensitive devices (e.g., a touchpad or physical click wheel). Contact/motion module  130  includes various software components for performing various operations related to detection of contact, such as determining if contact has occurred (e.g., detecting a finger-down event), determining an intensity of the contact (e.g., the force or pressure of the contact or a substitute for the force or pressure of the contact), determining if there is movement of the contact and tracking the movement across the touch-sensitive surface (e.g., detecting one or more finger-dragging events), and determining if the contact has ceased (e.g., detecting a finger-up event or a break in contact). Contact/motion module  130  receives contact data from the touch-sensitive surface. Determining movement of the point of contact, which is represented by a series of contact data, optionally includes determining speed (magnitude), velocity (magnitude and direction), and/or an acceleration (a change in magnitude and/or direction) of the point of contact. These operations are, optionally, applied to single contacts (e.g., one finger contacts) or to multiple simultaneous contacts (e.g., “multitouch”/multiple finger contacts). In some embodiments, contact/motion module  130  and display controller  156  detect contact on a touchpad. 
     In some embodiments, contact/motion module  130  uses a set of one or more intensity thresholds to determine whether an operation has been performed by a user (e.g., to determine whether a user has “clicked” on an icon). In some embodiments, at least a subset of the intensity thresholds are determined in accordance with software parameters (e.g., the intensity thresholds are not determined by the activation thresholds of particular physical actuators and can be adjusted without changing the physical hardware of device  100 ). For example, a mouse “click” threshold of a trackpad or touch screen display can be set to any of a large range of predefined threshold values without changing the trackpad or touch screen display hardware. Additionally, in some implementations, a user of the device is provided with software settings for adjusting one or more of the set of intensity thresholds (e.g., by adjusting individual intensity thresholds and/or by adjusting a plurality of intensity thresholds at once with a system-level click “intensity” parameter). 
     Contact/motion module  130  optionally detects a gesture input by a user. Different gestures on the touch-sensitive surface have different contact patterns (e.g., different motions, timings, and/or intensities of detected contacts). Thus, a gesture is, optionally, detected by detecting a particular contact pattern. For example, detecting a finger tap gesture includes detecting a finger-down event followed by detecting a finger-up (liftoff) event at the same position (or substantially the same position) as the finger-down event (e.g., at the position of an icon). As another example, detecting a finger swipe gesture on the touch-sensitive surface includes detecting a finger-down event followed by detecting one or more finger-dragging events, and subsequently followed by detecting a finger-up (liftoff) event. 
     Graphics module  132  includes various known software components for rendering and displaying graphics on touch screen  112  or other display, including components for changing the visual impact (e.g., brightness, transparency, saturation, contrast, or other visual property) of graphics that are displayed. As used herein, the term “graphics” includes any object that can be displayed to a user, including, without limitation, text, web pages, icons (such as user-interface objects including soft keys), digital images, videos, animations, and the like. 
     In some embodiments, graphics module  132  stores data representing graphics to be used. Each graphic is, optionally, assigned a corresponding code. Graphics module  132  receives, from applications etc., one or more codes specifying graphics to be displayed along with, if necessary, coordinate data and other graphic property data, and then generates screen image data to output to display controller  156 . 
     Haptic feedback module  133  includes various software components for generating instructions used by tactile output generator(s)  167  to produce tactile outputs at one or more locations on device  100  in response to user interactions with device  100 . 
     Text input module  134 , which is, optionally, a component of graphics module  132 , provides soft keyboards for entering text in various applications (e.g., contacts  137 , e-mail  140 , IM  141 , browser  147 , and any other application that needs text input). 
     GPS module  135  determines the location of the device and provides this information for use in various applications (e.g., to telephone module  138  for use in location-based dialing; to camera module  143  as picture/video metadata; and to applications that provide location-based services such as weather widgets, local yellow page widgets, and map/navigation widgets). 
     Applications  136  optionally include the following modules (or sets of instructions), or a subset or superset thereof:
         Contacts module  137  (sometimes called an address book or contact list);   Telephone module  138 ;   Video conference module  139 ;   E-mail client module  140 ;   Instant messaging (IM) module  141 ;   Workout support module  142 ;   Camera module  143  for still and/or video images;   Image management module  144 ;   Video player module;   Music player module;   Browser module  147 ;   Calendar module  148 ;   Widget modules  149 , which optionally include one or more of: weather widget  149 - 1 , stocks widget  149 - 2 , calculator widget  149 - 3 , alarm clock widget  149 - 4 , dictionary widget  149 - 5 , and other widgets obtained by the user, as well as user-created widgets  149 - 6 :   Widget creator module  150  for making user-created widgets  149 - 6 ;   Search module  151 ;   Video and music player module  152 , which merges video player module and music player module,   Notes module  153 ;   Map module  154 ; and/or   Online video module  155 .       

     Examples of other applications  136  that are, optionally, stored in memory  102  include other word processing applications, other image editing applications, drawing applications, presentation applications, JAVA-enabled applications, encryption, digital rights management, voice recognition, and voice replication. 
     In conjunction with touch screen  112 , display controller  156 , contact/motion module  130 , graphics module  132 , and text input module  134 , contacts module  137  are, optionally, used to manage an address book or contact list (e.g., stored in application internal state  192  of contacts module  137  in memory  102  or memory  370 ), including: adding name(s) to the address book; deleting name(s) from the address book; associating telephone number(s), e-mail address(es), physical address(es) or other information with a name; associating an image with a name; categorizing and sorting names; providing telephone numbers or e-mail addresses to initiate and/or facilitate communications by telephone  138 , video conference module  139 , e-mail  140 , or IM  141 ; and so forth. 
     In conjunction with RF circuitry  108 , audio circuitry  110 , speaker  111 , microphone  113 , touch screen  112 , display controller  156 , contact/motion module  130 , graphics module  132 , and text input module  134 , telephone module  138  are optionally, used to enter a sequence of characters corresponding to a telephone number, access one or more telephone numbers in contacts module  137 , modify a telephone number that has been entered, dial a respective telephone number, conduct a conversation, and disconnect or hang up when the conversation is completed. As noted above, the wireless communication optionally uses any of a plurality of communications standards, protocols, and technologies. 
     In conjunction with RF circuitry  108 , audio circuitry  110 , speaker  111 , microphone  113 , touch screen  112 , display controller  156 , optical sensor  164 , optical sensor controller  158 , contact/motion module  130 , graphics module  132 , text input module  134 , contacts module  137 , and telephone module  138 , video conference module  139  includes executable instructions to initiate, conduct, and terminate a video conference between a user and one or more other participants in accordance with user instructions. 
     In conjunction with RF circuitry  108 , touch screen  112 , display controller  156 , contact/motion module  130 , graphics module  132 , and text input module  134 , e-mail client module  140  includes executable instructions to create, send, receive, and manage e-mail in response to user instructions. In conjunction with image management module  144 , e-mail client module  140  makes it very easy to create and send e-mails with still or video images taken with camera module  143 . 
     In conjunction with RF circuitry  108 , touch screen  112 , display controller  156 , contact/motion module  130 , graphics module  132 , and text input module  134 , the instant messaging module  141  includes executable instructions to enter a sequence of characters corresponding to an instant message, to modify previously entered characters, to transmit a respective instant message (for example, using a Short Message Service (SMS) or Multimedia Message Service (MMS) protocol for telephony-based instant messages or using XMPP, SIMPLE, or IMPS for Internet-based instant messages), to receive instant messages, and to view received instant messages. In some embodiments, transmitted and/or received instant messages optionally include graphics, photos, audio files, video files and/or other attachments as are supported in an MMS and/or an Enhanced Messaging Service (EMS). As used herein, “instant messaging” refers to both telephony-based messages (e.g., messages sent using SMS or MMS) and Internet-based messages (e.g., messages sent using XMPP, SIMPLE, or IMPS). 
     In conjunction with RF circuitry  108 , touch screen  112 , display controller  156 , contact/motion module  130 , graphics module  132 , text input module  134 , GPS module  135 , map module  154 , and music player module, workout support module  142  includes executable instructions to create workouts (e.g., with time, distance, and/or calorie burning goals); communicate with workout sensors (sports devices); receive workout sensor data; calibrate sensors used to monitor a workout; select and play music for a workout; and display, store, and transmit workout data. 
     In conjunction with touch screen  112 , display controller  156 , optical sensor(s)  164 , optical sensor controller  158 , contact/motion module  130 , graphics module  132 , and image management module  144 , camera module  143  includes executable instructions to capture still images or video (including a video stream) and store them into memory  102 , modify characteristics of a still image or video, or delete a still image or video from memory  102 . 
     In conjunction with touch screen  112 , display controller  156 , contact/motion module  130 , graphics module  132 , text input module  134 , and camera module  143 , image management module  144  includes executable instructions to arrange, modify (e.g., edit), or otherwise manipulate, label, delete, present (e.g., in a digital slide show or album), and store still and/or video images. 
     In conjunction with RF circuitry  108 , touch screen  112 , display controller  156 , contact/motion module  130 , graphics module  132 , and text input module  134 , browser module  147  includes executable instructions to browse the Internet in accordance with user instructions, including searching, linking to, receiving, and displaying web pages or portions thereof, as well as attachments and other files linked to web pages. 
     In conjunction with RF circuitry  108 , touch screen  112 , display controller  156 , contact/motion module  130 , graphics module  132 , text input module  134 , e-mail client module  140 , and browser module  147 , calendar module  148  includes executable instructions to create, display, modify, and store calendars and data associated with calendars (e.g., calendar entries, to-do lists, etc.) in accordance with user instructions. 
     In conjunction with RF circuitry  108 , touch screen  112 , display controller  156 , contact/motion module  130 , graphics module  132 , text input module  134 , and browser module  147 , widget modules  149  are mini-applications that are, optionally, downloaded and used by a user (e.g., weather widget  149 - 1 , stocks widget  149 - 2 , calculator widget  149 - 3 , alarm clock widget  149 - 4 , and dictionary widget  149 - 5 ) or created by the user (e.g., user-created widget  149 - 6 ). In some embodiments, a widget includes an HTML (Hypertext Markup Language) file, a CSS (Cascading Style Sheets) file, and a JavaScript file. In some embodiments, a widget includes an XML (Extensible Markup Language) file and a JavaScript file (e.g., Yahoo!Widgets). 
     In conjunction with RF circuitry  108 , touch screen  112 , display controller  156 , contact/motion module  130 , graphics module  132 , text input module  134 , and browser module  147 , the widget creator module  150  are, optionally, used by a user to create widgets (e.g., turning a user-specified portion of a web page into a widget). 
     In conjunction with touch screen  112 , display controller  156 , contact/motion module  130 , graphics module  132 , and text input module  134 , search module  151  includes executable instructions to search for text, music, sound, image, video, and/or other files in memory  102  that match one or more search criteria (e.g., one or more user-specified search terms) in accordance with user instructions. 
     In conjunction with touch screen  112 , display controller  156 , contact/motion module  130 , graphics module  132 , audio circuitry  110 , speaker  111 , RF circuitry  108 , and browser module  147 , video and music player module  152  includes executable instructions that allow the user to download and play back recorded music and other sound files stored in one or more file formats, such as MP3 or AAC files, and executable instructions to display, present, or otherwise play back videos (e.g., on touch screen  112  or on an external, connected display via external port  124 ). In some embodiments, device  100  optionally includes the functionality of an MP3 player, such as an iPod (trademark of Apple Inc.). 
     In conjunction with touch screen  112 , display controller  156 , contact/motion module  130 , graphics module  132 , and text input module  134 , notes module  153  includes executable instructions to create and manage notes, to-do lists, and the like in accordance with user instructions. 
     In conjunction with RF circuitry  108 , touch screen  112 , display controller  156 , contact/motion module  130 , graphics module  132 , text input module  134 , GPS module  135 , and browser module  147 , map module  154  are, optionally, used to receive, display, modify, and store maps and data associated with maps (e.g., driving directions, data on stores and other points of interest at or near a particular location, and other location-based data) in accordance with user instructions. 
     In conjunction with touch screen  112 , display controller  156 , contact/motion module  130 , graphics module  132 , audio circuitry  110 , speaker  111 , RF circuitry  108 , text input module  134 , e-mail client module  140 , and browser module  147 , online video module  155  includes instructions that allow the user to access, browse, receive (e.g., by streaming and/or download), play back (e.g., on the touch screen or on an external, connected display via external port  124 ), send an e-mail with a link to a particular online video, and otherwise manage online videos in one or more file formats, such as H.264. In some embodiments, instant messaging module  141 , rather than e-mail client module  140 , is used to send a link to a particular online video. Additional description of the online video application can be found in U.S. Provisional Patent Application No. 60/936,562, “Portable Multifunction Device, Method, and Graphical User Interface for Playing Online Videos,” filed Jun. 20, 2007, and U.S. patent application Ser. No. 11/968,067, “Portable Multifunction Device, Method, and Graphical User Interface for Playing Online Videos,” filed Dec. 31, 2007, the contents of which are hereby incorporated by reference in their entirety. 
     Each of the above-identified modules and applications corresponds to a set of executable instructions for performing one or more functions described above and the methods described in this application (e.g., the computer-implemented methods and other information processing methods described herein). These modules (e.g., sets of instructions) need not be implemented as separate software programs (such as computer programs (e.g., including instructions)), procedures, or modules, and thus various subsets of these modules are, optionally, combined or otherwise rearranged in various embodiments. For example, video player module is, optionally, combined with music player module into a single module (e.g., video and music player module  152 ,  FIG.  1 A ). In some embodiments, memory  102  optionally stores a subset of the modules and data structures identified above. Furthermore, memory  102  optionally stores additional modules and data structures not described above. 
     In some embodiments, device  100  is a device where operation of a predefined set of functions on the device is performed exclusively through a touch screen and/or a touchpad. By using a touch screen and/or a touchpad as the primary input control device for operation of device  100 , the number of physical input control devices (such as push buttons, dials, and the like) on device  100  is, optionally, reduced. 
     The predefined set of functions that are performed exclusively through a touch screen and/or a touchpad optionally include navigation between user interfaces. In some embodiments, the touchpad, when touched by the user, navigates device  100  to a main, home, or root menu from any user interface that is displayed on device  100 . In such embodiments, a “menu button” is implemented using a touchpad. In some other embodiments, the menu button is a physical push button or other physical input control device instead of a touchpad. 
       FIG.  1 B  is a block diagram illustrating exemplary components for event handling in accordance with some embodiments. In some embodiments, memory  102  ( FIG.  1 A ) or  370  ( FIG.  3   ) includes event sorter  170  (e.g., in operating system  126 ) and a respective application  136 - 1  (e.g., any of the aforementioned applications  137 - 151 ,  155 ,  380 - 390 ). 
     Event sorter  170  receives event information and determines the application  136 - 1  and application view  191  of application  136 - 1  to which to deliver the event information. Event sorter  170  includes event monitor  171  and event dispatcher module  174 . In some embodiments, application  136 - 1  includes application internal state  192 , which indicates the current application view(s) displayed on touch-sensitive display  112  when the application is active or executing. In some embodiments, device/global internal state  157  is used by event sorter  170  to determine which application(s) is (are) currently active, and application internal state  192  is used by event sorter  170  to determine application views  191  to which to deliver event information. 
     In some embodiments, application internal state  192  includes additional information, such as one or more of: resume information to be used when application  136 - 1  resumes execution, user interface state information that indicates information being displayed or that is ready for display by application  136 - 1 , a state queue for enabling the user to go back to a prior state or view of application  136 - 1 , and a redo/undo queue of previous actions taken by the user. 
     Event monitor  171  receives event information from peripherals interface  118 . Event information includes information about a sub-event (e.g., a user touch on touch-sensitive display  112 , as part of a multi-touch gesture). Peripherals interface  118  transmits information it receives from I/O subsystem  106  or a sensor, such as proximity sensor  166 , accelerometer(s)  168 , and/or microphone  113  (through audio circuitry  110 ). Information that peripherals interface  118  receives from I/O subsystem  106  includes information from touch-sensitive display  112  or a touch-sensitive surface. 
     In some embodiments, event monitor  171  sends requests to the peripherals interface  118  at predetermined intervals. In response, peripherals interface  118  transmits event information. In other embodiments, peripherals interface  118  transmits event information only when there is a significant event (e.g., receiving an input above a predetermined noise threshold and/or for more than a predetermined duration). 
     In some embodiments, event sorter  170  also includes a hit view determination module  172  and/or an active event recognizer determination module  173 . 
     Hit view determination module  172  provides software procedures for determining where a sub-event has taken place within one or more views when touch-sensitive display  112  displays more than one view. Views are made up of controls and other elements that a user can see on the display. 
     Another aspect of the user interface associated with an application is a set of views, sometimes herein called application views or user interface windows, in which information is displayed and touch-based gestures occur. The application views (of a respective application) in which a touch is detected optionally correspond to programmatic levels within a programmatic or view hierarchy of the application. For example, the lowest level view in which a touch is detected is, optionally, called the hit view, and the set of events that are recognized as proper inputs are, optionally, determined based, at least in part, on the hit view of the initial touch that begins a touch-based gesture. 
     Hit view determination module  172  receives information related to sub-events of a touch-based gesture. When an application has multiple views organized in a hierarchy, hit view determination module  172  identifies a hit view as the lowest view in the hierarchy which should handle the sub-event. In most circumstances, the hit view is the lowest level view in which an initiating sub-event occurs (e.g., the first sub-event in the sequence of sub-events that form an event or potential event). Once the hit view is identified by the hit view determination module  172 , the hit view typically receives all sub-events related to the same touch or input source for which it was identified as the hit view. 
     Active event recognizer determination module  173  determines which view or views within a view hierarchy should receive a particular sequence of sub-events. In some embodiments, active event recognizer determination module  173  determines that only the hit view should receive a particular sequence of sub-events. In other embodiments, active event recognizer determination module  173  determines that all views that include the physical location of a sub-event are actively involved views, and therefore determines that all actively involved views should receive a particular sequence of sub-events. In other embodiments, even if touch sub-events were entirely confined to the area associated with one particular view, views higher in the hierarchy would still remain as actively involved views. 
     Event dispatcher module  174  dispatches the event information to an event recognizer (e.g., event recognizer  180 ). In embodiments including active event recognizer determination module  173 , event dispatcher module  174  delivers the event information to an event recognizer determined by active event recognizer determination module  173 . In some embodiments, event dispatcher module  174  stores in an event queue the event information, which is retrieved by a respective event receiver  182 . 
     In some embodiments, operating system  126  includes event sorter  170 . Alternatively, application  136 - 1  includes event sorter  170 . In yet other embodiments, event sorter  170  is a stand-alone module, or a part of another module stored in memory  102 , such as contact/motion module  130 . 
     In some embodiments, application  136 - 1  includes a plurality of event handlers  190  and one or more application views  191 , each of which includes instructions for handling touch events that occur within a respective view of the application&#39;s user interface. Each application view  191  of the application  136 - 1  includes one or more event recognizers  180 . Typically, a respective application view  191  includes a plurality of event recognizers  180 . In other embodiments, one or more of event recognizers  180  are part of a separate module, such as a user interface kit or a higher level object from which application  136 - 1  inherits methods and other properties. In some embodiments, a respective event handler  190  includes one or more of: data updater  176 , object updater  177 , GUI updater  178 , and/or event data  179  received from event sorter  170 . Event handler  190  optionally utilizes or calls data updater  176 , object updater  177 , or GUI updater  178  to update the application internal state  192 . Alternatively, one or more of the application views  191  include one or more respective event handlers  190 . Also, in some embodiments, one or more of data updater  176 , object updater  177 , and GUI updater  178  are included in a respective application view  191 . 
     A respective event recognizer  180  receives event information (e.g., event data  179 ) from event sorter  170  and identifies an event from the event information. Event recognizer  180  includes event receiver  182  and event comparator  184 . In some embodiments, event recognizer  180  also includes at least a subset of: metadata  183 , and event delivery instructions  188  (which optionally include sub-event delivery instructions). 
     Event receiver  182  receives event information from event sorter  170 . The event information includes information about a sub-event, for example, a touch or a touch movement. Depending on the sub-event, the event information also includes additional information, such as location of the sub-event. When the sub-event concerns motion of a touch, the event information optionally also includes speed and direction of the sub-event. In some embodiments, events include rotation of the device from one orientation to another (e.g., from a portrait orientation to a landscape orientation, or vice versa), and the event information includes corresponding information about the current orientation (also called device attitude) of the device. 
     Event comparator  184  compares the event information to predefined event or sub-event definitions and, based on the comparison, determines an event or sub-event, or determines or updates the state of an event or sub-event. In some embodiments, event comparator  184  includes event definitions  186 . Event definitions  186  contain definitions of events (e.g., predefined sequences of sub-events), for example, event  1  ( 187 - 1 ), event  2  ( 187 - 2 ), and others. In some embodiments, sub-events in an event ( 187 ) include, for example, touch begin, touch end, touch movement, touch cancellation, and multiple touching. In one example, the definition for event  1  ( 187 - 1 ) is a double tap on a displayed object. The double tap, for example, comprises a first touch (touch begin) on the displayed object for a predetermined phase, a first liftoff (touch end) for a predetermined phase, a second touch (touch begin) on the displayed object for a predetermined phase, and a second liftoff (touch end) for a predetermined phase. In another example, the definition for event  2  ( 187 - 2 ) is a dragging on a displayed object. The dragging, for example, comprises a touch (or contact) on the displayed object for a predetermined phase, a movement of the touch across touch-sensitive display  112 , and liftoff of the touch (touch end). In some embodiments, the event also includes information for one or more associated event handlers  190 . 
     In some embodiments, event definition  187  includes a definition of an event for a respective user-interface object. In some embodiments, event comparator  184  performs a hit test to determine which user-interface object is associated with a sub-event. For example, in an application view in which three user-interface objects are displayed on touch-sensitive display  112 , when a touch is detected on touch-sensitive display  112 , event comparator  184  performs a hit test to determine which of the three user-interface objects is associated with the touch (sub-event). If each displayed object is associated with a respective event handler  190 , the event comparator uses the result of the hit test to determine which event handler  190  should be activated. For example, event comparator  184  selects an event handler associated with the sub-event and the object triggering the hit test. 
     In some embodiments, the definition for a respective event ( 187 ) also includes delayed actions that delay delivery of the event information until after it has been determined whether the sequence of sub-events does or does not correspond to the event recognizer&#39;s event type. 
     When a respective event recognizer  180  determines that the series of sub-events do not match any of the events in event definitions  186 , the respective event recognizer  180  enters an event impossible, event failed, or event ended state, after which it disregards subsequent sub-events of the touch-based gesture. In this situation, other event recognizers, if any, that remain active for the hit view continue to track and process sub-events of an ongoing touch-based gesture. 
     In some embodiments, a respective event recognizer  180  includes metadata  183  with configurable properties, flags, and/or lists that indicate how the event delivery system should perform sub-event delivery to actively involved event recognizers. In some embodiments, metadata  183  includes configurable properties, flags, and/or lists that indicate how event recognizers interact, or are enabled to interact, with one another. In some embodiments, metadata  183  includes configurable properties, flags, and/or lists that indicate whether sub-events are delivered to varying levels in the view or programmatic hierarchy. 
     In some embodiments, a respective event recognizer  180  activates event handler  190  associated with an event when one or more particular sub-events of an event are recognized. In some embodiments, a respective event recognizer  180  delivers event information associated with the event to event handler  190 . Activating an event handler  190  is distinct from sending (and deferred sending) sub-events to a respective hit view. In some embodiments, event recognizer  180  throws a flag associated with the recognized event, and event handler  190  associated with the flag catches the flag and performs a predefined process. 
     In some embodiments, event delivery instructions  188  include sub-event delivery instructions that deliver event information about a sub-event without activating an event handler. Instead, the sub-event delivery instructions deliver event information to event handlers associated with the series of sub-events or to actively involved views. Event handlers associated with the series of sub-events or with actively involved views receive the event information and perform a predetermined process. 
     In some embodiments, data updater  176  creates and updates data used in application  136 - 1 . For example, data updater  176  updates the telephone number used in contacts module  137 , or stores a video file used in video player module. In some embodiments, object updater  177  creates and updates objects used in application  136 - 1 . For example, object updater  177  creates a new user-interface object or updates the position of a user-interface object. GUI updater  178  updates the GUI. For example, GUI updater  178  prepares display information and sends it to graphics module  132  for display on a touch-sensitive display. 
     In some embodiments, event handler(s)  190  includes or has access to data updater  176 , object updater  177 , and GUI updater  178 . In some embodiments, data updater  176 , object updater  177 , and GUI updater  178  are included in a single module of a respective application  136 - 1  or application view  191 . In other embodiments, they are included in two or more software modules. 
     It shall be understood that the foregoing discussion regarding event handling of user touches on touch-sensitive displays also applies to other forms of user inputs to operate multifunction devices  100  with input devices, not all of which are initiated on touch screens. For example, mouse movement and mouse button presses, optionally coordinated with single or multiple keyboard presses or holds; contact movements such as taps, drags, scrolls, etc. on touchpads; pen stylus inputs; movement of the device; oral instructions; detected eye movements; biometric inputs; and/or any combination thereof are optionally utilized as inputs corresponding to sub-events which define an event to be recognized. 
       FIG.  2    illustrates a portable multifunction device  100  having a touch screen  112  in accordance with some embodiments. The touch screen optionally displays one or more graphics within user interface (UI)  200 . In this embodiment, as well as others described below, a user is enabled to select one or more of the graphics by making a gesture on the graphics, for example, with one or more fingers  202  (not drawn to scale in the figure) or one or more styluses  203  (not drawn to scale in the figure). In some embodiments, selection of one or more graphics occurs when the user breaks contact with the one or more graphics. In some embodiments, the gesture optionally includes one or more taps, one or more swipes (from left to right, right to left, upward and/or downward), and/or a rolling of a finger (from right to left, left to right, upward and/or downward) that has made contact with device  100 . In some implementations or circumstances, inadvertent contact with a graphic does not select the graphic. For example, a swipe gesture that sweeps over an application icon optionally does not select the corresponding application when the gesture corresponding to selection is a tap. 
     Device  100  optionally also include one or more physical buttons, such as “home” or menu button  204 . As described previously, menu button  204  is, optionally, used to navigate to any application  136  in a set of applications that are, optionally, executed on device  100 . Alternatively, in some embodiments, the menu button is implemented as a soft key in a GUI displayed on touch screen  112 . 
     In some embodiments, device  100  includes touch screen  112 , menu button  204 , push button  206  for powering the device on/off and locking the device, volume adjustment button(s)  208 , subscriber identity module (SIM) card slot  210 , headset jack  212 , and docking/charging external port  124 . Push button  206  is, optionally, used to turn the power on/off on the device by depressing the button and holding the button in the depressed state for a predefined time interval; to lock the device by depressing the button and releasing the button before the predefined time interval has elapsed; and/or to unlock the device or initiate an unlock process. In an alternative embodiment, device  100  also accepts verbal input for activation or deactivation of some functions through microphone  113 . Device  100  also, optionally, includes one or more contact intensity sensors  165  for detecting intensity of contacts on touch screen  112  and/or one or more tactile output generators  167  for generating tactile outputs for a user of device  100 . 
       FIG.  3    is a block diagram of an exemplary multifunction device with a display and a touch-sensitive surface in accordance with some embodiments. Device  300  need not be portable. In some embodiments, device  300  is a laptop computer, a desktop computer, a tablet computer, a multimedia player device, a navigation device, an educational device (such as a child&#39;s learning toy), a gaming system, or a control device (e.g., a home or industrial controller). Device  300  typically includes one or more processing units (CPUs)  310 , one or more network or other communications interfaces  360 , memory  370 , and one or more communication buses  320  for interconnecting these components. Communication buses  320  optionally include circuitry (sometimes called a chipset) that interconnects and controls communications between system components. Device  300  includes input/output (I/O) interface  330  comprising display  340 , which is typically a touch screen display. I/O interface  330  also optionally includes a keyboard and/or mouse (or other pointing device)  350  and touchpad  355 , tactile output generator  357  for generating tactile outputs on device  300  (e.g., similar to tactile output generator(s)  167  described above with reference to  FIG.  1 A ), sensors  359  (e.g., optical, acceleration, proximity, touch-sensitive, and/or contact intensity sensors similar to contact intensity sensor(s)  165  described above with reference to  FIG.  1 A ). Memory  370  includes high-speed random access memory, such as DRAM, SRAM, DDR RAM, or other random access solid state memory devices; and optionally includes non-volatile memory, such as one or more magnetic disk storage devices, optical disk storage devices, flash memory devices, or other non-volatile solid state storage devices. Memory  370  optionally includes one or more storage devices remotely located from CPU(s)  310 . In some embodiments, memory  370  stores programs, modules, and data structures analogous to the programs, modules, and data structures stored in memory  102  of portable multifunction device  100  ( FIG.  1 A ), or a subset thereof. Furthermore, memory  370  optionally stores additional programs, modules, and data structures not present in memory  102  of portable multifunction device  100 . For example, memory  370  of device  300  optionally stores drawing module  380 , presentation module  382 , word processing module  384 , website creation module  386 , disk authoring module  388 , and/or spreadsheet module  390 , while memory  102  of portable multifunction device  100  ( FIG.  1 A ) optionally does not store these modules. 
     Each of the above-identified elements in  FIG.  3    is, optionally, stored in one or more of the previously mentioned memory devices. Each of the above-identified modules corresponds to a set of instructions for performing a function described above. The above-identified modules or computer programs (e.g., sets of instructions or including instructions) need not be implemented as separate software programs (such as computer programs (e.g., including instructions)), procedures, or modules, and thus various subsets of these modules are, optionally, combined or otherwise rearranged in various embodiments. In some embodiments, memory  370  optionally stores a subset of the modules and data structures identified above. Furthermore, memory  370  optionally stores additional modules and data structures not described above. 
     Attention is now directed towards embodiments of user interfaces that are, optionally, implemented on, for example, portable multifunction device  100 . 
       FIG.  4 A  illustrates an exemplary user interface for a menu of applications on portable multifunction device  100  in accordance with some embodiments. Similar user interfaces are, optionally, implemented on device  300 . In some embodiments, user interface  400  includes the following elements, or a subset or superset thereof:
         Signal strength indicator(s)  402  for wireless communication(s), such as cellular and Wi-Fi signals;   Time  404 ;   Bluetooth indicator  405 ;   Battery status indicator  406 ;   Tray  408  with icons for frequently used applications, such as:
           Icon  416  for telephone module  138 , labeled “Phone,” which optionally includes an indicator  414  of the number of missed calls or voicemail messages;   Icon  418  for e-mail client module  140 , labeled “Mail,” which optionally includes an indicator  410  of the number of unread e-mails;   Icon  420  for browser module  147 , labeled “Browser;” and   Icon  422  for video and music player module  152 , also referred to as iPod (trademark of Apple Inc.) module  152 , labeled “iPod;” and   
           Icons for other applications, such as:
           Icon  424  for IM module  141 , labeled “Messages;”   Icon  426  for calendar module  148 , labeled “Calendar;”   Icon  428  for image management module  144 , labeled “Photos;”   Icon  430  for camera module  143 , labeled “Camera;”   Icon  432  for online video module  155 , labeled “Online Video;”   Icon  434  for stocks widget  149 - 2 , labeled “Stocks;”   Icon  436  for map module  154 , labeled “Maps;”   Icon  438  for weather widget  149 - 1 , labeled “Weather;”   Icon  440  for alarm clock widget  149 - 4 , labeled “Clock;”   Icon  442  for workout support module  142 , labeled “Workout Support;”   Icon  444  for notes module  153 , labeled “Notes;” and   Icon  446  for a settings application or module, labeled “Settings,” which provides access to settings for device  100  and its various applications  136 .   
               

     It should be noted that the icon labels illustrated in  FIG.  4 A  are merely exemplary. For example, icon  422  for video and music player module  152  is labeled “Music” or “Music Player.” Other labels are, optionally, used for various application icons. In some embodiments, a label for a respective application icon includes a name of an application corresponding to the respective application icon. In some embodiments, a label for a particular application icon is distinct from a name of an application corresponding to the particular application icon. 
       FIG.  4 B  illustrates an exemplary user interface on a device (e.g., device  300 ,  FIG.  3   ) with a touch-sensitive surface  451  (e.g., a tablet or touchpad  355 ,  FIG.  3   ) that is separate from the display  450  (e.g., touch screen display  112 ). Device  300  also, optionally, includes one or more contact intensity sensors (e.g., one or more of sensors  359 ) for detecting intensity of contacts on touch-sensitive surface  451  and/or one or more tactile output generators  357  for generating tactile outputs for a user of device  300 . 
     Although some of the examples that follow will be given with reference to inputs on touch screen display  112  (where the touch-sensitive surface and the display are combined), in some embodiments, the device detects inputs on a touch-sensitive surface that is separate from the display, as shown in  FIG.  4 B . In some embodiments, the touch-sensitive surface (e.g.,  451  in  FIG.  4 B ) has a primary axis (e.g.,  452  in  FIG.  4 B ) that corresponds to a primary axis (e.g.,  453  in  FIG.  4 B ) on the display (e.g.,  450 ). In accordance with these embodiments, the device detects contacts (e.g.,  460  and  462  in  FIG.  4 B ) with the touch-sensitive surface  451  at locations that correspond to respective locations on the display (e.g., in  FIG.  4 B,  460    corresponds to  468  and  462  corresponds to  470 ). In this way, user inputs (e.g., contacts  460  and  462 , and movements thereof) detected by the device on the touch-sensitive surface (e.g.,  451  in  FIG.  4 B ) are used by the device to manipulate the user interface on the display (e.g.,  450  in  FIG.  4 B ) of the multifunction device when the touch-sensitive surface is separate from the display. It should be understood that similar methods are, optionally, used for other user interfaces described herein. 
     Additionally, while the following examples are given primarily with reference to finger inputs (e.g., finger contacts, finger tap gestures, finger swipe gestures), it should be understood that, in some embodiments, one or more of the finger inputs are replaced with input from another input device (e.g., a mouse-based input or stylus input). For example, a swipe gesture is, optionally, replaced with a mouse click (e.g., instead of a contact) followed by movement of the cursor along the path of the swipe (e.g., instead of movement of the contact). As another example, a tap gesture is, optionally, replaced with a mouse click while the cursor is located over the location of the tap gesture (e.g., instead of detection of the contact followed by ceasing to detect the contact). Similarly, when multiple user inputs are simultaneously detected, it should be understood that multiple computer mice are, optionally, used simultaneously, or a mouse and finger contacts are, optionally, used simultaneously. 
       FIG.  5 A  illustrates exemplary personal electronic device  500 . Device  500  includes body  502 . In some embodiments, device  500  can include some or all of the features described with respect to devices  100  and  300  (e.g.,  FIGS.  1 A- 4 B ). In some embodiments, device  500  has touch-sensitive display screen  504 , hereafter touch screen  504 . Alternatively, or in addition to touch screen  504 , device  500  has a display and a touch-sensitive surface. As with devices  100  and  300 , in some embodiments, touch screen  504  (or the touch-sensitive surface) optionally includes one or more intensity sensors for detecting intensity of contacts (e.g., touches) being applied. The one or more intensity sensors of touch screen  504  (or the touch-sensitive surface) can provide output data that represents the intensity of touches. The user interface of device  500  can respond to touches based on their intensity, meaning that touches of different intensities can invoke different user interface operations on device  500 . 
     Exemplary techniques for detecting and processing touch intensity are found, for example, in related applications: International Patent Application Serial No. PCT/US2013/040061, titled “Device, Method, and Graphical User Interface for Displaying User Interface Objects Corresponding to an Application,” filed May 8, 2013, published as WIPO Publication No. WO/2013/169849, and International Patent Application Serial No. PCT/US2013/069483, titled “Device, Method, and Graphical User Interface for Transitioning Between Touch Input to Display Output Relationships,” filed Nov. 11, 2013, published as WIPO Publication No. WO/2014/105276, each of which is hereby incorporated by reference in their entirety. 
     In some embodiments, device  500  has one or more input mechanisms  506  and  508 . Input mechanisms  506  and  508 , if included, can be physical. Examples of physical input mechanisms include push buttons and rotatable mechanisms. In some embodiments, device  500  has one or more attachment mechanisms. Such attachment mechanisms, if included, can permit attachment of device  500  with, for example, hats, eyewear, earrings, necklaces, shirts, jackets, bracelets, watch straps, chains, trousers, belts, shoes, purses, backpacks, and so forth. These attachment mechanisms permit device  500  to be worn by a user. 
       FIG.  5 B  depicts exemplary personal electronic device  500 . In some embodiments, device  500  can include some or all of the components described with respect to  FIGS.  1 A,  1 B , and  3 . Device  500  has bus  512  that operatively couples I/O section  514  with one or more computer processors  516  and memory  518 . I/O section  514  can be connected to display  504 , which can have touch-sensitive component  522  and, optionally, intensity sensor  524  (e.g., contact intensity sensor). In addition, I/O section  514  can be connected with communication unit  530  for receiving application and operating system data, using Wi-Fi, Bluetooth, near field communication (NFC), cellular, and/or other wireless communication techniques. Device  500  can include input mechanisms  506  and/or  508 . Input mechanism  506  is, optionally, a rotatable input device or a depressible and rotatable input device, for example. Input mechanism  508  is, optionally, a button, in some examples. 
     Input mechanism  508  is, optionally, a microphone, in some examples. Personal electronic device  500  optionally includes various sensors, such as GPS sensor  532 , accelerometer  534 , directional sensor  540  (e.g., compass), gyroscope  536 , motion sensor  538 , and/or a combination thereof, all of which can be operatively connected to I/O section  514 . 
     Memory  518  of personal electronic device  500  can include one or more non-transitory computer-readable storage mediums, for storing computer-executable instructions, which, when executed by one or more computer processors  516 , for example, can cause the computer processors to perform the techniques described below, including processes  1400  and  1500  ( FIGS.  14 A- 14 B  and  FIGS.  15 A- 15 B ). A computer-readable storage medium can be any medium that can tangibly contain or store computer-executable instructions for use by or in connection with the instruction execution system, apparatus, or device. In some examples, the storage medium is a transitory computer-readable storage medium. In some examples, the storage medium is a non-transitory computer-readable storage medium. The non-transitory computer-readable storage medium can include, but is not limited to, magnetic, optical, and/or semiconductor storages. Examples of such storage include magnetic disks, optical discs based on CD, DVD, or Blu-ray technologies, as well as persistent solid-state memory such as flash, solid-state drives, and the like. Personal electronic device  500  is not limited to the components and configuration of  FIG.  5 B , but can include other or additional components in multiple configurations. 
     As used here, the term “affordance” refers to a user-interactive graphical user interface object that is, optionally, displayed on the display screen of devices  100 ,  300 , and/or  500  ( FIGS.  1 A,  3 , and  5 A- 5 B ). For example, an image (e.g., icon), a button, and text (e.g., hyperlink) each optionally constitute an affordance. 
     As used herein, the term “focus selector” refers to an input element that indicates a current part of a user interface with which a user is interacting. In some implementations that include a cursor or other location marker, the cursor acts as a “focus selector” so that when an input (e.g., a press input) is detected on a touch-sensitive surface (e.g., touchpad  355  in  FIG.  3    or touch-sensitive surface  451  in  FIG.  4 B ) while the cursor is over a particular user interface element (e.g., a button, window, slider, or other user interface element), the particular user interface element is adjusted in accordance with the detected input. In some implementations that include a touch screen display (e.g., touch-sensitive display system  112  in  FIG.  1 A  or touch screen  112  in  FIG.  4 A ) that enables direct interaction with user interface elements on the touch screen display, a detected contact on the touch screen acts as a “focus selector” so that when an input (e.g., a press input by the contact) is detected on the touch screen display at a location of a particular user interface element (e.g., a button, window, slider, or other user interface element), the particular user interface element is adjusted in accordance with the detected input. In some implementations, focus is moved from one region of a user interface to another region of the user interface without corresponding movement of a cursor or movement of a contact on a touch screen display (e.g., by using a tab key or arrow keys to move focus from one button to another button); in these implementations, the focus selector moves in accordance with movement of focus between different regions of the user interface. Without regard to the specific form taken by the focus selector, the focus selector is generally the user interface element (or contact on a touch screen display) that is controlled by the user so as to communicate the user&#39;s intended interaction with the user interface (e.g., by indicating, to the device, the element of the user interface with which the user is intending to interact). For example, the location of a focus selector (e.g., a cursor, a contact, or a selection box) over a respective button while a press input is detected on the touch-sensitive surface (e.g., a touchpad or touch screen) will indicate that the user is intending to activate the respective button (as opposed to other user interface elements shown on a display of the device). 
     As used in the specification and claims, the term “characteristic intensity” of a contact refers to a characteristic of the contact based on one or more intensities of the contact. In some embodiments, the characteristic intensity is based on multiple intensity samples. The characteristic intensity is, optionally, based on a predefined number of intensity samples, or a set of intensity samples collected during a predetermined time period (e.g., 0.05, 0.1, 0.2, 0.5, 1, 2, 5, 10 seconds) relative to a predefined event (e.g., after detecting the contact, prior to detecting liftoff of the contact, before or after detecting a start of movement of the contact, prior to detecting an end of the contact, before or after detecting an increase in intensity of the contact, and/or before or after detecting a decrease in intensity of the contact). A characteristic intensity of a contact is, optionally, based on one or more of: a maximum value of the intensities of the contact, a mean value of the intensities of the contact, an average value of the intensities of the contact, a top 10 percentile value of the intensities of the contact, a value at the half maximum of the intensities of the contact, a value at the 90 percent maximum of the intensities of the contact, or the like. In some embodiments, the duration of the contact is used in determining the characteristic intensity (e.g., when the characteristic intensity is an average of the intensity of the contact over time). In some embodiments, the characteristic intensity is compared to a set of one or more intensity thresholds to determine whether an operation has been performed by a user. For example, the set of one or more intensity thresholds optionally includes a first intensity threshold and a second intensity threshold. In this example, a contact with a characteristic intensity that does not exceed the first threshold results in a first operation, a contact with a characteristic intensity that exceeds the first intensity threshold and does not exceed the second intensity threshold results in a second operation, and a contact with a characteristic intensity that exceeds the second threshold results in a third operation. In some embodiments, a comparison between the characteristic intensity and one or more thresholds is used to determine whether or not to perform one or more operations (e.g., whether to perform a respective operation or forgo performing the respective operation), rather than being used to determine whether to perform a first operation or a second operation. 
       FIG.  5 C  illustrates detecting a plurality of contacts  552 A- 552 E on touch-sensitive display screen  504  with a plurality of intensity sensors  524 A- 524 D.  FIG.  5 C  additionally includes intensity diagrams that show the current intensity measurements of the intensity sensors  524 A- 524 D relative to units of intensity. In this example, the intensity measurements of intensity sensors  524 A and  524 D are each 9 units of intensity, and the intensity measurements of intensity sensors  524 B and  524 C are each 7 units of intensity. In some implementations, an aggregate intensity is the sum of the intensity measurements of the plurality of intensity sensors  524 A- 524 D, which in this example is 32 intensity units. In some embodiments, each contact is assigned a respective intensity that is a portion of the aggregate intensity.  FIG.  5 D  illustrates assigning the aggregate intensity to contacts  552 A- 552 E based on their distance from the center of force  554 . In this example, each of contacts  552 A,  552 B, and  552 E are assigned an intensity of contact of 8 intensity units of the aggregate intensity, and each of contacts  552 C and  552 D are assigned an intensity of contact of 4 intensity units of the aggregate intensity. More generally, in some implementations, each contact j is assigned a respective intensity Ij that is a portion of the aggregate intensity, A, in accordance with a predefined mathematical function, Ij=A·(Dj/ΣDi), where Dj is the distance of the respective contact j to the center of force, and ΣDi is the sum of the distances of all the respective contacts (e.g., i=1 to last) to the center of force. The operations described with reference to  FIGS.  5 C- 5 D  can be performed using an electronic device similar or identical to device  100 ,  300 , or  500 . In some embodiments, a characteristic intensity of a contact is based on one or more intensities of the contact. In some embodiments, the intensity sensors are used to determine a single characteristic intensity (e.g., a single characteristic intensity of a single contact). It should be noted that the intensity diagrams are not part of a displayed user interface, but are included in  FIGS.  5 C- 5 D  to aid the reader. 
     In some embodiments, a portion of a gesture is identified for purposes of determining a characteristic intensity. For example, a touch-sensitive surface optionally receives a continuous swipe contact transitioning from a start location and reaching an end location, at which point the intensity of the contact increases. In this example, the characteristic intensity of the contact at the end location is, optionally, based on only a portion of the continuous swipe contact, and not the entire swipe contact (e.g., only the portion of the swipe contact at the end location). In some embodiments, a smoothing algorithm is, optionally, applied to the intensities of the swipe contact prior to determining the characteristic intensity of the contact. For example, the smoothing algorithm optionally includes one or more of: an unweighted sliding-average smoothing algorithm, a triangular smoothing algorithm, a median filter smoothing algorithm, and/or an exponential smoothing algorithm. In some circumstances, these smoothing algorithms eliminate narrow spikes or dips in the intensities of the swipe contact for purposes of determining a characteristic intensity. 
     The intensity of a contact on the touch-sensitive surface is, optionally, characterized relative to one or more intensity thresholds, such as a contact-detection intensity threshold, a light press intensity threshold, a deep press intensity threshold, and/or one or more other intensity thresholds. In some embodiments, the light press intensity threshold corresponds to an intensity at which the device will perform operations typically associated with clicking a button of a physical mouse or a trackpad. In some embodiments, the deep press intensity threshold corresponds to an intensity at which the device will perform operations that are different from operations typically associated with clicking a button of a physical mouse or a trackpad. In some embodiments, when a contact is detected with a characteristic intensity below the light press intensity threshold (e.g., and above a nominal contact-detection intensity threshold below which the contact is no longer detected), the device will move a focus selector in accordance with movement of the contact on the touch-sensitive surface without performing an operation associated with the light press intensity threshold or the deep press intensity threshold. Generally, unless otherwise stated, these intensity thresholds are consistent between different sets of user interface figures. 
     An increase of characteristic intensity of the contact from an intensity below the light press intensity threshold to an intensity between the light press intensity threshold and the deep press intensity threshold is sometimes referred to as a “light press” input. An increase of characteristic intensity of the contact from an intensity below the deep press intensity threshold to an intensity above the deep press intensity threshold is sometimes referred to as a “deep press” input. An increase of characteristic intensity of the contact from an intensity below the contact-detection intensity threshold to an intensity between the contact-detection intensity threshold and the light press intensity threshold is sometimes referred to as detecting the contact on the touch-surface. A decrease of characteristic intensity of the contact from an intensity above the contact-detection intensity threshold to an intensity below the contact-detection intensity threshold is sometimes referred to as detecting liftoff of the contact from the touch-surface. In some embodiments, the contact-detection intensity threshold is zero. In some embodiments, the contact-detection intensity threshold is greater than zero. 
     In some embodiments described herein, one or more operations are performed in response to detecting a gesture that includes a respective press input or in response to detecting the respective press input performed with a respective contact (or a plurality of contacts), where the respective press input is detected based at least in part on detecting an increase in intensity of the contact (or plurality of contacts) above a press-input intensity threshold. In some embodiments, the respective operation is performed in response to detecting the increase in intensity of the respective contact above the press-input intensity threshold (e.g., a “down stroke” of the respective press input). In some embodiments, the press input includes an increase in intensity of the respective contact above the press-input intensity threshold and a subsequent decrease in intensity of the contact below the press-input intensity threshold, and the respective operation is performed in response to detecting the subsequent decrease in intensity of the respective contact below the press-input threshold (e.g., an “up stroke” of the respective press input). 
       FIGS.  5 E- 5 H  illustrate detection of a gesture that includes a press input that corresponds to an increase in intensity of a contact  562  from an intensity below a light press intensity threshold (e.g., “IT L ”) in  FIG.  5 E , to an intensity above a deep press intensity threshold (e.g., “IT D ”) in  FIG.  5 H . The gesture performed with contact  562  is detected on touch-sensitive surface  560  while cursor  576  is displayed over application icon  572 B corresponding to App  2 , on a displayed user interface  570  that includes application icons  572 A- 572 D displayed in predefined region  574 . In some embodiments, the gesture is detected on touch-sensitive display  504 . The intensity sensors detect the intensity of contacts on touch-sensitive surface  560 . The device determines that the intensity of contact  562  peaked above the deep press intensity threshold (e.g., “IT D ”). Contact  562  is maintained on touch-sensitive surface  560 . In response to the detection of the gesture, and in accordance with contact  562  having an intensity that goes above the deep press intensity threshold (e.g., “IT D ”) during the gesture, reduced-scale representations  578 A- 578 C (e.g., thumbnails) of recently opened documents for App  2  are displayed, as shown in  FIGS.  5 F- 5 H . In some embodiments, the intensity, which is compared to the one or more intensity thresholds, is the characteristic intensity of a contact. It should be noted that the intensity diagram for contact  562  is not part of a displayed user interface, but is included in  FIGS.  5 E- 5 H  to aid the reader. 
     In some embodiments, the display of representations  578 A- 578 C includes an animation. For example, representation  578 A is initially displayed in proximity of application icon  572 B, as shown in  FIG.  5 F . As the animation proceeds, representation  578 A moves upward and representation  578 B is displayed in proximity of application icon  572 B, as shown in  FIG.  5 G . Then, representations  578 A moves upward,  578 B moves upward toward representation  578 A, and representation  578 C is displayed in proximity of application icon  572 B, as shown in  FIG.  5 H . Representations  578 A- 578 C form an array above icon  572 B. In some embodiments, the animation progresses in accordance with an intensity of contact  562 , as shown in  FIGS.  5 F- 5 G , where the representations  578 A- 578 C appear and move upwards as the intensity of contact  562  increases toward the deep press intensity threshold (e.g., “IT D ”). In some embodiments, the intensity, on which the progress of the animation is based, is the characteristic intensity of the contact. The operations described with reference to  FIGS.  5 E- 5 H  can be performed using an electronic device similar or identical to device  100 ,  300 , or  500 . 
     In some embodiments, the device employs intensity hysteresis to avoid accidental inputs sometimes termed “jitter,” where the device defines or selects a hysteresis intensity threshold with a predefined relationship to the press-input intensity threshold (e.g., the hysteresis intensity threshold is X intensity units lower than the press-input intensity threshold or the hysteresis intensity threshold is 75%, 90%, or some reasonable proportion of the press-input intensity threshold). Thus, in some embodiments, the press input includes an increase in intensity of the respective contact above the press-input intensity threshold and a subsequent decrease in intensity of the contact below the hysteresis intensity threshold that corresponds to the press-input intensity threshold, and the respective operation is performed in response to detecting the subsequent decrease in intensity of the respective contact below the hysteresis intensity threshold (e.g., an “up stroke” of the respective press input). Similarly, in some embodiments, the press input is detected only when the device detects an increase in intensity of the contact from an intensity at or below the hysteresis intensity threshold to an intensity at or above the press-input intensity threshold and, optionally, a subsequent decrease in intensity of the contact to an intensity at or below the hysteresis intensity, and the respective operation is performed in response to detecting the press input (e.g., the increase in intensity of the contact or the decrease in intensity of the contact, depending on the circumstances). 
     For ease of explanation, the descriptions of operations performed in response to a press input associated with a press-input intensity threshold or in response to a gesture including the press input are, optionally, triggered in response to detecting either: an increase in intensity of a contact above the press-input intensity threshold, an increase in intensity of a contact from an intensity below the hysteresis intensity threshold to an intensity above the press-input intensity threshold, a decrease in intensity of the contact below the press-input intensity threshold, and/or a decrease in intensity of the contact below the hysteresis intensity threshold corresponding to the press-input intensity threshold. Additionally, in examples where an operation is described as being performed in response to detecting a decrease in intensity of a contact below the press-input intensity threshold, the operation is, optionally, performed in response to detecting a decrease in intensity of the contact below a hysteresis intensity threshold corresponding to, and lower than, the press-input intensity threshold. 
       FIG.  6    illustrates exemplary devices connected via one or more communication channels to participate in a transaction in accordance with some embodiments. One or more exemplary electronic devices (e.g., devices  100 ,  300 , and  500 ) are configured to optionally detect input (e.g., a particular user input, an NFC field) and optionally transmit payment information (e.g., using NFC). The one or more electronic devices optionally include NFC hardware and are configured to be NFC-enabled. 
     The electronic devices (e.g., devices  100 ,  300 , and  500 ) are optionally configured to store payment account information associated with each of one or more payment accounts. Payment account information includes, for example, one or more of: a person&#39;s or company&#39;s name, a billing address, a login, a password, an account number, an expiration date, a security code, a telephone number, a bank associated with the payment account (e.g., an issuing bank), and a card network identifier. In some embodiments, payment account information includes include an image, such as a picture of a payment card (e.g., taken by the device and/or received at the device). In some embodiments, the electronic devices receive user input, including at least some payment account information (e.g., receiving user-entered credit, debit, account, or gift card number and expiration date). In some embodiments, the electronic devices detect at least some payment account information from an image (e.g., of a payment card captured by a camera sensor of the device). In some embodiments, the electronic devices receive at least some payment account information from another device (e.g., another user device or a server). In some embodiments, the electronic device receives payment account information from a server associated with another service for which an account for a user or user device previously made a purchase or identified payment account data (e.g., an app for renting or selling audio and/or video files). 
     In some embodiments, a payment account is added to an electronic device (e.g., device  100 ,  300 , and  500 ), such that payment account information is securely stored on the electronic device. In some embodiments, after a user initiates such process, the electronic device transmits information for the payment account to a transaction-coordination server, which then communicates with a server operated by a payment network for the account (e.g., a payment server) to ensure validity of the information. The electronic device is optionally configured to receive a script from the server that allows the electronic device to program payment information for the account onto the secure element. 
     In some embodiments, communication among electronic devices  100 ,  300 , and  500  facilitates transactions (e.g., generally or specific transactions). For example, a first electronic device (e.g.,  100 ) can serve as a provisioning or managing device and can send notifications of new or updated payment account data (e.g., information for a new account, updated information for an existing account, and/or an alert pertaining to an existing account) to a second electronic device (e.g.,  500 ). In another example, a first electronic device (e.g.,  100 ) can send data to a second election device, wherein the data reflects information about payment transactions facilitated at the first electronic device. The information optionally includes one or more of: a payment amount, an account used, a time of purchase, and whether a default account was changed. The second device (e.g.,  500 ) optionally uses such information to update a default payment account (e.g., based on a learning algorithm or explicit user input). 
     Electronic devices (e.g.,  100 ,  300 ,  500 ) are configured to communicate with each other over any of a variety of networks. For example, the devices communicate using a Bluetooth connection  608  (e.g., which includes a traditional Bluetooth connection or a Bluetooth Low Energy connection) or using a Wi-Fi network  606 . Communications among user devices are, optionally, conditioned to reduce the possibility of inappropriately sharing information across devices. For example, communications relating to payment information requires that the communicating devices be paired (e.g., be associated with each other via an explicit user interaction) or be associated with a same user account. 
     In some embodiments, an electronic device (e.g.,  100 ,  300 ,  500 ) is used to communicate with a point-of-sale (POS) payment terminal  600 , which is optionally NFC-enabled. The communication optionally occurs using a variety of communication channels and/or technologies. In some embodiments, an electronic device (e.g.,  100 ,  300 ,  500 ) communicates with payment terminal  600  using an NFC channel  610 . In some embodiments, payment terminal  600  communicates with an electronic device (e.g.,  100 ,  300 ,  500 ) using a peer-to-peer NFC mode. The electronic device (e.g.,  100 ,  300 ,  500 ) is optionally configured to transmit a signal to payment terminal  600  that includes payment information for a payment account (e.g., a default account or an account selected for the particular transaction). 
     In some embodiments, proceeding with a transaction includes transmitting a signal that includes payment information for an account, such as a payment account. In some embodiments, proceeding with the transaction includes reconfiguring the electronic device (e.g.,  100 ,  300 ,  500 ) to respond as a contactless payment card, such as an NFC-enabled contactless payment card, and then transmitting credentials of the account via NFC, such as to payment terminal  600 . In some embodiments, subsequent to transmitting credentials of the account via NFC, the electronic device reconfigures to not respond as a contactless payment card (e.g., requiring authorization before again reconfigured to respond as a contactless payment card via NFC). 
     In some embodiments, the generation of and/or transmission of the signal is controlled by a secure element in the electronic device (e.g.,  100 ,  300 ,  500 ). The secure element optionally requires a particular user input prior to releasing payment information. For example, the secure element optionally requires detection that the electronic device is being worn, detection of a button press, detection of entry of a passcode, detection of a touch, detection of one or more option selections (e.g., received while interacting with an application), detection of a fingerprint signature, detection of a voice or voice command, and or detection of a gesture or movement (e.g., rotation or acceleration). In some embodiments, if a communication channel (e.g., an NFC communication channel) with another device (e.g., payment terminal  600 ) is established within a defined time period from detection of the input, the secure element releases payment information to be transmitted to the other device (e.g., payment terminal  600 ). In some embodiments, the secure element is a hardware component that controls release of secure information. In some embodiments, the secure element is a software component that controls release of secure information. 
     In some embodiments, protocols related to transaction participation depend on, for example, device types. For example, a condition for generating and/or transmitting payment information can be different for a wearable device (e.g., device  500 ) and a phone (e.g., device  100 ). For example, a generation and/or transmission condition for a wearable device includes detecting that a button has been pressed (e.g., after a security verification), while a corresponding condition for a phone does not require button-depression and instead requires detection of particular interaction with an application. In some embodiments, a condition for transmitting and/or releasing payment information includes receiving particular input on each of multiple devices. For example, release of payment information optionally requires detection of a fingerprint and/or passcode at the device (e.g., device  100 ) and detection of a mechanical input (e.g., button press) on another device (e.g., device  500 ). 
     Payment terminal  600  optionally uses the payment information to generate a signal to transmit to a payment server  604  to determine whether the payment is authorized. Payment server  604  optionally includes any device or system configured to receive payment information associated with a payment account and to determine whether a proposed purchase is authorized. In some embodiments, payment server  604  includes a server of an issuing bank. Payment terminal  600  communicates with payment server  604  directly or indirectly via one or more other devices or systems (e.g., a server of an acquiring bank and/or a server of a card network). 
     Payment server  604  optionally uses at least some of the payment information to identify a user account from among a database of user accounts (e.g.,  602 ). For example, each user account includes payment information. An account is, optionally, located by locating an account with particular payment information matching that from the POS communication. In some embodiments, a payment is denied when provided payment information is not consistent (e.g., an expiration date does not correspond to a credit, debit, or gift card number) or when no account includes payment information matching that from the POS communication. 
     In some embodiments, data for the user account further identifies one or more restrictions (e.g., credit limits); current or previous balances; previous transaction dates, locations and/or amounts; account status (e.g., active or frozen), and/or authorization instructions. In some embodiments, the payment server (e.g.,  604 ) uses such data to determine whether to authorize a payment. For example, a payment server denies a payment when a purchase amount added to a current balance would result in exceeding an account limit, when an account is frozen, when a previous transaction amount exceeds a threshold, or when a previous transaction count or frequency exceeds a threshold. 
     In some embodiments, payment server  604  responds to POS payment terminal  600  with an indication as to whether a proposed purchase is authorized or denied. In some embodiments, POS payment terminal  600  transmits a signal to the electronic device (e.g.,  100 ,  300 ,  500 ) to identify the result. For example, POS payment terminal  600  sends a receipt to the electronic device (e.g.,  100 ,  300 ,  500 ) when a purchase is authorized (e.g., via a transaction-coordination server that manages a transaction app on the user device). In some instances, POS payment terminal  600  presents an output (e.g., a visual or audio output) indicative of the result. Payment can be sent to a merchant as part of the authorization process or can be subsequently sent. 
     In some embodiments, the electronic device (e.g.,  100 ,  300 ,  500 ) participates in a transaction that is completed without the involvement of POS payment terminal  600 . For example, upon detecting that a mechanical input has been received, a secure element in the electronic device (e.g.,  100 ,  300 ,  500 ) releases payment information to allow an application on the electronic device to access the information (e.g., and to transmit the information to a server associated with the application). 
     In some embodiments, the electronic device (e.g.,  100 ,  300 ,  500 ) is in a locked state or an unlocked state. In the locked state, the electronic device is powered on and operational but is prevented from performing a predefined set of operations in response to the user input. The predefined set of operations optionally includes navigation between user interfaces, activation or deactivation of a predefined set of functions, and activation or deactivation of certain applications. The locked state can be used to prevent unintentional or unauthorized use of some functionality of the electronic device or activation or deactivation of some functions on the electronic device. In the unlocked state, the electronic device  100  is power on and operational and is not prevented from performing at least a portion of the predefined set of operations that cannot be performed while in the locked state. 
     When the device is in the locked state, the device is said to be locked. In some embodiments, the device in the locked state optionally responds to a limited set of user inputs, including input that corresponds to an attempt to transition the device to the unlocked state or input that corresponds to powering the device off. 
     In some embodiments, a secure element (e.g.,  115 ) is a hardware component (e.g., a secure microcontroller chip) configured to securely store data or an algorithm such that the securely stored data is not accessible by the device without proper authentication information from a user of the device. Keeping the securely stored data in a secure element that is separate from other storage on the device prevents access to the securely stored data even if other storage locations on the device are compromised (e.g., by malicious code or other attempts to compromise information stored on the device). In some embodiments, the secure element provides (or releases) payment information (e.g., an account number and/or a transaction-specific dynamic security code). In some embodiments, the secure element provides (or releases) the payment information in response to the device receiving authorization, such as a user authentication (e.g., fingerprint authentication; passcode authentication; detecting double-press of a hardware button when the device is in an unlocked state, and optionally, while the device has been continuously on a user&#39;s wrist since the device was unlocked by providing authentication credentials to the device, where the continuous presence of the device on the user&#39;s wrist is determined by periodically checking that the device is in contact with the user&#39;s skin). For example, the device detects a fingerprint at a fingerprint sensor (e.g., a fingerprint sensor integrated into a button) of the device. The device determines whether the fingerprint is consistent with a registered fingerprint. In accordance with a determination that the fingerprint is consistent with the registered fingerprint, the secure element provides (or releases) payment information. In accordance with a determination that the fingerprint is not consistent with the registered fingerprint, the secure element forgoes providing (or releasing) payment information. 
     Attention is now directed towards embodiments of user interfaces (“UI”) and associated processes that are implemented on an electronic device, such as portable multifunction device  100 , device  300 , or device  500 . 
       FIGS.  7 A- 7 V  illustrate exemplary user interfaces for providing authentication at a computer system in accordance with some embodiments. The user interfaces in these figures are used to illustrate the processes described below, including the processes in  FIGS.  14 A- 14 B  and  FIGS.  15 A- 15 B . 
       FIGS.  7 A- 7 D  illustrate an exemplary scenario where a user (e.g., as shown in  FIG.  7 A ) is able to successfully perform a secure operation (e.g., unlock computer system  700 ) (e.g., as shown in  FIGS.  7 B- 7 D ) when a determination is made that a captured biometric feature (e.g., the face of a user) (e.g., not when only a portion of the biometric feature) matches a biometric profile. 
       FIG.  7 A  illustrates user  760  (e.g., “Jane”) holding computer system  700  and, optionally (e.g., as indicated by indicator  786 ), wearing external accessory device  790 . In the exemplary embodiments provided in  FIGS.  7 A- 7 V , computer system  700  is a smartphone, and external accessory device  790  is a smartwatch. In some embodiments, computer system  700  can be a different type of computer system, such as a tablet computer. In some embodiments, external accessory device  790  can be a different type of external accessory device, such as a smartphone or tablet computer. In some embodiments, computer system  700  and/or external accessory device  790  include one or more components of device  100 , device  300 , and/or device  500 . 
     As illustrated in  FIG.  7 A , computer system  700  includes display  710 . Computer system  700  also includes one or more inputs devices (e.g., touch screen of display  710 , hardware button  702 , and a microphone), a wireless communication radio, and one or more biometric sensors (e.g., biometric sensor  704 , touch screen of display  710 ). In some embodiments, biometric sensor  704  includes one or more biometric sensors that include a camera, such as a depth camera (e.g., an infrared camera), a thermographic camera, or a combination thereof. In some embodiments, biometric sensor  704  includes a biometric sensor (e.g., facial recognition sensor), such as those described in U.S. patent application Ser. No. 14/341,860; U.S. Patent Pub. No. 2016/0025993; U.S. patent application Ser. No. 13/810,451; and U.S. Pat. No. 9,098,931, which are hereby incorporated by reference in their entireties for any purpose. In some embodiments, biometric sensor  704  includes one or more fingerprint sensors (e.g., a fingerprint sensor integrated into an affordance). In some embodiments, computer system  700  further includes a light-emitting device (e.g., light projector), such as an IR floodlight, a structured light projector, or a combination thereof. The light-emitting device is, optionally, used to illuminate the biometric feature (e.g., the face) during capture of biometric data of biometric features by biometric sensor  704 . In some embodiments, computer system  700  includes a plurality of cameras separate from biometric sensor  704 . In some embodiments, computer system  700  includes only one camera separate from biometric sensor  704 . 
     As illustrated in  FIG.  7 A , user  760  is holding computer system  700  in a position where user  760  can see content displayed on display  710  and biometric sensor  704  can detect the face of user  760  (e.g., which is shown by zone of detection indicator  784 ). In particular, the face of user  760  includes upper portion  760   a  and bottom portion  760   b . As illustrated in  FIG.  7 A , upper portion  760   a  includes the eyes and eyebrows of user  760 , and bottom portion  760   b  includes the nose and mouth of user  760 . In some embodiments, other portions of the face of user  760  can be delineated as being a different portion. In some embodiments, upper portion  760   a  and/or bottom portion  760   b  can include less or more of the face of user  760 . At  FIG.  7 A , biometric sensor  704  can detect both the upper portion  760   a  and bottom portion  760   b  of the face of user  760 . As illustrated in  FIG.  7 A , external accessory device  790  is in an unlocked state, which is represented by unlock indicator  794 . 
       FIGS.  7 B- 7 D  illustrate one or more exemplary user interfaces that are displayed on display  710  of computer system  700 . In particular, the one or more exemplary user interfaces of  FIGS.  7 B- 7 D  are described in relation to an exemplary scenario where user  760  attempts to use biometric authentication to unlock computer system  700  while user  760 , external accessory device  790 , and computer system  700  are oriented and in a state as depicted and described above in relation to  FIG.  7 A . 
     As illustrated in  FIG.  7 B , computer system  700  displays notification  714 , which indicates that a message from John Appleseed has been received. User  760  wishes to view the restricted content of notification  714  (e.g., the message from John Appleseed) but is unable to do so, as computer system  700  is currently in a locked state, as indicated by lock indicator  712   a . As illustrated in  FIG.  7 B , computer system  700  displays a locked state user interface (UI) on display  710 . The locked state UI includes lock indicator  712   a , which provides an indication that computer system  700  is in a locked state. Viewing the restricted content of notification  714  requires successful authentication (e.g., determining that information (or data) about a biometric feature obtained using biometric sensor  704  corresponds to (or matches) stored authorized credentials or biometric features). 
     At  FIG.  7 B , computer system  700  detects upward swipe input  750   b  on (e.g., at a location corresponding to) user interface object  716  and determines that a request to perform a secure operation (e.g., a request to initiate biometric authentication) has been received because an unlock input/gesture, such as an upward swipe input  750   b , has been detected. In some embodiments, computer system  700  determines that the request to perform the secure operation has been received when one or more other gestures and/or other inputs are detected, such as an input on hardware button  702  as discussed below in relation to  FIGS.  7 P- 7 S . In some embodiments, the one or more other gestures/inputs can include one or more inputs/gesture (e.g., a tap input) that are detected when computer system  700  is in a low power state, one or more gestures/inputs (e.g., a tap input) on a notification (e.g., notification  714 ) or another user interface object, one or more gestures/inputs on a notification or another user interface object that is displayed while computer system  700  is in a locked state, and/or one or more gestures/inputs (e.g., presses) that are detected on one or more hardware input mechanisms, such as hardware button  702 . In some embodiments, computer system  700  receives a request to perform a secure operation when a determination is made that computer system  700  has been lifted (or raised) to a particular position or by more than a particular amount, such as being raised from a substantially horizontal orientation (and/or vertical orientation) to an orientation of computer system  700  shown in  FIG.  7 A . 
     At  FIG.  7 B , in response to detecting upward swipe input  750   b  and determining that the request to perform a secure operation has been received, computer system  700  initiates biometric authentication. After initiating biometric authentication (e.g., prior to successful authentication), computer system  700  determines that a face is detected by biometric sensor  704 . 
     As illustrated in  FIG.  7 C , in response to determining that the request to perform a secure operation has been received and determining that a face is detected by biometric sensor  704 , computer system  700  displays biometric authentication status  720  (e.g., “Face Authentication”) on display  710  to indicate that biometric authentication is being performed. In addition, computer system  700  continues to display lock indicator  712   a  to indicate that computer system  700  remains in the locked state. At  FIGS.  7 B- 7 C , computer system  700  determines that the face of user  760  (e.g., the biometric feature) that is being captured by biometric sensor  704  has resulted in successful biometric authentication. As indicated by indication  788   a  of  FIG.  7 B  (“FULL MATCH DETECTED”), computer system  700  has determined that a full match of the biometric feature has been detected. That is, a determination has been made that the face of user  760  matches (e.g., within a certain confidence interval) an enrolled (e.g., a saved, secured, verified, and/or a trusted) version of the biometric feature (e.g., a version of the biometric feature that data representation upper portion  760   a  and bottom portion  760   b ). In some embodiments, the enrolled version of the biometric feature belongs to an authorized biometric profile (e.g., enrolled biometric data, biometric data that enrolled before the current biometric authentication process was initiated and/or when computer system  700  was in an unlocked state). In some embodiments, one or more biometric features other than the face of user  760  (e.g., fingerprint, eyes) can be detected and used to determine whether the biometric authentication was successful (e.g., using an authorized biometric profile that includes enrolled data that is representative of the respective biometric feature). In some embodiments, indication  788   a  is not displayed by computer system  700 . 
     At  FIG.  7 D , because the determination was made that the full match of the biometric feature has been detected (e.g., and/or that full biometric authentication was successful), computer system  700  transitions from the locked state to an unlocked state. Because the determination was made that the full match of the biometric feature has been detected, computer system  700  replaces lock indicator  712   a  with unlock indicator  712   b  on display  710 , as illustrated in  FIGS.  7 C- 7 D . Unlock indicator  712   b  indicates that computer system  700  is in an unlocked state. In some embodiments, after displaying the user interface of  FIG.  7 D , computer system  700  can display one or more user interfaces and/or perform one or more operations that would have been previously restricted to the user if biometric authentication were not successful (e.g., as discussed below in relation to  FIGS.  7 I- 7 O ). 
       FIGS.  7 E- 7 H  illustrate an exemplary scenario where a user is able to successfully perform a secure operation when a determination is made that partial biometric authentication is successful, but full biometric authentication was not successful, and an alternative method for authenticating is provided to the user because of the determination that partial biometric authentication was successful. As used herein, a determination is made that partial biometric authentication is successful when only a portion (e.g., eyes, fingertip, bottom portion of an eye) of a captured biometric feature matches an enrolled portion (e.g., eyes, fingertip, bottom portion of an eye) of a biometric feature. 
       FIG.  7 E  illustrates user  760  holding computer system  700  and wearing external accessory device  790  in the same position that user  760  was holding computer system  700  in  FIG.  7 A . To contrast  FIG.  7 E  with  FIG.  7 A , user  760  is wearing mask  728  (e.g., a face covering) in  FIG.  7 E  while user  760  was not wearing a mask in  FIG.  7 A . Because user  760  is wearing a mask in  FIG.  7 E , biometric sensor  704  can only detect upper portion  760   a  of the face of user  760  (e.g., which is shown by zone of detection indicator  784 ). Bottom portion  760   b  of  FIG.  7 A  is covered by mask  728  in  FIG.  7 E . While user  760  is illustrated wearing mask  728  that covers bottom portion  760   b , the embodiments described herein would operate similarly even if another portion of user  760  was covered (e.g., user  760  could wear an eye mask without wearing mask  728 , such that upper portion  760   a  could be covered while bottom portion  760   b  is uncovered). While user  760  is wearing a mask at  FIG.  7 E , a user wearing another item (e.g., a scarf, a towel) can have a similar impact (as described herein) as a user wearing a mask. 
       FIGS.  7 F- 7 H  illustrate one or more exemplary user interfaces that are displayed on display  710  of computer system  700 . In particular, the one or more exemplary user interfaces of  FIG.  7 F- 7 H  are described in relation to an exemplary scenario where user  760  attempts to use biometric authentication (e.g., while wearing a mask) to unlock computer system  700 , and an alternative method for authenticating is provided to the user because partial biometric authentication (and/or another method of authenticating) was successful. 
     At  FIG.  7 F , computer system  700  displays notification  714 , which indicates that a message from John Appleseed has been received. User  760  wishes to view the restricted content of notification  714  (e.g., the message from John Appleseed) but is unable to do so, as computer system  700  is currently in a locked state (e.g., as indicated by lock indicator  712   a ). As illustrated in  FIG.  7 F , computer system  700  displays a locked state user interface with lock indicator  712   a , which provides an indication that computer system  700  is in a locked state. At  FIG.  7 F , computer system  700  detects upward swipe input  750   f  on user interface object  716  and determines that a request to perform a secure operation (e.g., a request to initiate biometric authentication) has been received because an unlock input, such as an upward swipe input  750   f , has been detected. At  FIG.  7 F , in response to detecting upward swipe input  750   f  and determining that the request to perform a secure operation has been received, computer system  700  initiates a biometric authentication process. 
     At  FIG.  7 F , as a part of the biometric authentication process, computer system  700  determines that the face of user  760  (e.g., biometric data) that is being captured by biometric sensor  704  does not match an enrolled biometric feature (e.g., full biometric authentication is unsuccessful). Here, the face of user  760  does match the enrolled biometric feature because only upper portion  760   a  of the face of user  760  can accurately captured. As illustrated in  FIG.  7 F , portions (e.g., bottom portion  760   b  of  FIG.  7 E ) are obstructed by mask  728 , so computer system  700  is not able to accurately capture these obstructed portions. In some embodiments, computer system  700  determines that full biometric authentication (e.g., the captured feature matching the enrolled biometric feature) is unsuccessful and/or the face of user  760  (e.g., biometric data) that is being captured by biometric sensor  704  does not match the enrolled biometric feature because a determination has been made that a mask (e.g., mask  728 ) has been detected on the face of user  760 . After determining that the face of user  760  that is being captured by biometric sensor  704  does not match an enrolled biometric feature, computer system  700  determines that partial biometric authentication is successful (e.g., as indicated by indication  788   b , “PARTIAL MATCH DETECTED”). In some embodiments, indication  788   b  is not displayed by computer system  700 . At  FIG.  7 F , the determination is made that partial biometric authentication is successful because the captured portion (e.g., upper portion  760   a ) of the face of user  760  matches (e.g., within a threshold confidence interval) an enrolled portion (e.g., upper portion) of the biometric feature that belongs to a biometric profile corresponding to user  760 . 
     As illustrated in  FIG.  7 G , because computer system  700  determined that the face of user  760  (e.g., biometric data) that is being captured by biometric sensor  704  does not match an enrolled biometric feature, computer system  700  remains in the locked state (e.g., is not transitioned to the unlocked state). As illustrated in  FIG.  7 G , computer system  700  continues to display lock indicator  712   a  because of this determination. However, as illustrated in  FIG.  7 G , computer system  700  displays prompt  734  because a determination was made that a partial match of the enrolled biometric feature was detected (e.g., the determination was made that biometric authentication is successful). That is, a portion (e.g. upper portion  760   a ) of the captured biometric feature matches an enrolled portion of the biometric feature, Prompt  734  includes the phrase, “TAP WATCH TO UNLOCK,” and indicates an alternative authentication method that can be used to perform the secure operation (e.g., unlock computer system  700 ), As illustrated in  FIG.  7 G , because the determination was made that partial match was detected, external accessory device  790  is updated to display prompt  796 , which indicates that the alternative authentication method can be used to perform the secure operation (e.g., including the phrase “TAP TO UNLOCK PHONE”). In addition, external accessory device  790  displays prompt  796  and/or computer system  700  displays prompt  734  because a determination is made that external accessory device  790  is in an unlocked state (e.g., as indicated by indicator  794  of  FIG.  7 E , as discussed above in relation to  FIG.  7 A ). In some embodiments, one or more of prompt  734  and prompt  796  would not be displayed and the alternative authentication method cannot be used to perform the secure operation when a determination is-made-that-is made that external accessory device  790  is in a locked state. In some embodiments, when external accessory device  790  is in a locked state, a determination is made that external accessory device  790  cannot be used to unlocked computer system  700  (e.g., because no authentication has been provided for external accessory device  790  and/or a determination is made that external accessory device  790  is less secure than when external accessory device  790  is authenticated). 
     As illustrated in  FIG.  7 G , prompt  734  and prompt  796  indicate the same alternative authentication method that can be used to perform the secure operation, where the alternative authentication method is completed by a user tapping on external accessory device  790  to unlock computer system  700 . Notably, in  FIG.  7 G , prompt  734  and prompt  796  are displayed because the determination was made that a partial match of the enrolled biometric feature was detected, and computer system  700  remains in the locked state (e.g., among the other reasons discussed above). In other words, computer system  700  provides an alternative authentication method because a determination is made that a partial match of the enrolled biometric feature was detected (and because a determination is made that full match of the enrolled biometric feature was not detected). In some embodiments, computer system  700  and/or external accessory device  790  does not display a prompt and computer system  700  remains in the locked state because a determination is made that a partial match of the enrolled biometric feature was not detected (and because a determination is made that full match of the enrolled biometric feature was not detected), as described below in relation to  FIGS.  7 T- 7 V . In some embodiments, computer system  700  and/or external accessory device  790  does not display a prompt and computer system  700  remains in the locked state when a determination is made that the gaze of user  760  is not directed toward computer system  700  and/or biometric sensor  704 . In some embodiments, computer system  700  and/or external accessory device  790  does not display a prompt until a determination is made that the gaze of user  760  is directed toward computer system  700  and/or biometric sensor  704 . In some embodiments, computer system  700  and/or external accessory device  790  does not display a prompt because a determination is made that external accessory device  790  is not within a predetermination distance (e.g., 1-3 meters) from computer system  700  (e.g., during the biometric authentication process). In some embodiments, computer system  700  and/or external accessory device  790  does not display a prompt because a determination is made that external accessory device  790  is not unlocked (e.g., during the biometric authentication process). At  FIG.  7 G , tap input  750   g  is detected on the display of external accessory device  790 . 
     As illustrated in  FIG.  7 H , in response to the detection of tap input  750   g , computer system  700  is transitioned from a locked state to an unlocked state (e.g., as indicated by unlock indicator  712   b  of  FIG.  7 H  replacing lock indicator  712   a  of  FIG.  7 G ). Thus, as described above in relation to  FIGS.  7 E- 7 H , computer system  700  performs the secure operation (e.g., unlocks) using an alternative authentication method when full biometric authentication is unsuccessful and partial biometric authentication is successful (e.g., among the other reasons discussed above, such as external accessory device  790  being unlocked and within a predetermined distance from computer system  700 ). In some embodiments, computer system  700  is maintained in the locked state when the alternative authentication method (e.g., indicated by prompt  734  and/or prompt  796 ) is not provided and/or is not successful (e.g., a swipe input is received when the prompt instructed the user to provide a tap input). Although the alternative authentication method described in  FIGS.  7 E- 7 H  is performed when a tap input is received on external accessory device  790 , computer system  700  and/or external accessory device  790  can display a prompt concerning one or more other alternative authentication methods and/or one or more other alternative authentication methods can be performed to cause computer system  700  to perform the secure operation (e.g., unlock). In some embodiments, the one or more alternative authentication methods can include computer system  700  and/or external accessory device  790  detecting other types of inputs and/or gestures than tap input  750   g , such as a press-and-hold gesture/input, a multi-tap gesture/input, a swipe gesture/input, a pinch gesture/input, or any combination thereof. In some embodiments, the one or more alternative authentication methods can include computer system  700  and/or external accessory device  790  detecting a series of predefined inputs/gestures, where the inputs/gestures have to be detected in a certain order, on a certain location of a device/system, and/or on a particular device/system. In some embodiments, the one or more alternative authentication methods can include one or more techniques are described below in relation to  FIGS.  8 A- 8 D ,  FIGS.  9 A- 9 D ,  FIGS.  10 A- 10 D ,  FIGS.  11 A- 11 D ,  FIGS.  12 A- 12 D ,  FIGS.  13 A- 13 F , and/or any combination thereof. 
       FIGS.  7 I- 7 O  illustrate exemplary embodiments that are provided to describe how computer system  700  can provide different levels of access privileges (e.g., read, write, update, and delete privileges) based on which form of authentication (e.g., full biometric authentication or partial biometric authentication combined with alternative authentication) was determined to be successful. In some embodiments, computer system  700  can provide different levels of access privileges for different applications based on which form of authentication was determined to be successful. In some embodiments, computer system  700  provides the user with more access privileges when computer system  700  is unlocked after a determination has been made that full biometric authentication is successful than the access privileges provided when computer system  700  is unlocked after the alternative authentication method is provided and/or is determined to be successful (and, in addition, after full biometric authentication is determined to be unsuccessful, partial biometric authentication is determined to be successful). In some embodiments, computer system  700  provides the user with more access privileges when computer system  700  is unlocked after a determination has been made that full biometric authentication is successful because full biometric authentication is considered a more reliable (e.g., more secure, trusted) form of authentication than the alternative authentication method (e.g., and partial biometric authentication). 
     At  FIG.  7 I , computer system  700  is displaying a home screen user interface that includes application icons  740 . Application icons  740  include watch application icon  740   a , browser application icon  740   b , passwords application icon  740   c , financial application icon  740   d , phone application icon  740   e , messaging application icon  740   f , e-mail application icon  740   g , and camera application icon  740   h . In some embodiments, computer system  700  allows a user to interact with and/or perform functions related to each application (e.g., that corresponds to application icons  740 ) installed on computer system  700  and/or perform one or more system functions based on which authentication method was used to unlock computer system  700 . 
       FIGS.  7 J- 7 K  illustrate alternative embodiments that are provided to describe the different access privileges for an application that computer system  700  can provide to a user who has been authenticated via full biometric authentication (e.g., as described above in relation to  FIGS.  7 A- 7 D ) and a user who has been authenticated via the alternative authentication method (e.g., as described above in relation to  FIGS.  7 E- 7 G ). In particular,  FIG.  7 J  illustrates an embodiment where the user has been authenticated via full biometric authentication and  FIG.  7 K  illustrates an embodiment where the user has been authenticated via the alternative authentication method (e.g., as described above in relation to  FIGS.  7 E- 7 G ). At  FIG.  7 I , computer system  700  detects tap input  750   i   1  on financial application icon  740   d  and, as described below, displays the user interface of  FIG.  7 J  or the user interface of  FIG.  7 K  based on the authentication method that was used to unlock computer system  700 . 
     As illustrated in  FIG.  7 J , in response to detecting tap input  750   i   1 , computer system  700  opens a financial application that corresponds to financial application icon  740   d  and displays financial application user interface  742 . Financial application user interface  742  contains account information concerning financial accounts for user  760  (“JANE&#39;S CHECKING ACCOUNT”). This information includes sensitive information, such as balances and transaction information related to the financial accounts for user  760 . At  FIG.  7 J , computer system  700  displays financial application user interface  742  that includes account information because the user has been authenticated via full biometric authentication to unlock computer system  700  (e.g., sometime after computer system  700  is transitioned to the unlocked state, as described above in relation to  FIGS.  7 A- 7 D ). Thus, at  FIG.  7 J , computer system  700  has provided the user will full access privileges to create, view, update, and delete sensitive information. 
     Alternatively, as illustrated in  FIG.  7 K , computer system  700  displays prompt  744  in response to detecting tap input  750   i   1 . Prompt  744  indicates that the user does not have permission to access the financial application that corresponds to financial application icon  740   d . At  FIG.  7 K , computer system  700  displays prompt  744  instead of opening the financial application because the alternative authentication method was used to unlock computer system  700  (e.g., sometime after computer system  700  is transitioned to the unlocked state, as described above in relation to  FIGS.  7 E- 7 G ) and the user does not have access privileges to open the financial application. Thus, as compared to  FIG.  7 J  (e.g., full biometric authentication used to unlock computer system  700 ), computer system  700  provides a user with reduced access privileges at  FIG.  7 K  because the alternative authentication method was used to unlock computer system  700 . In some embodiments, instead of displaying prompt  744 , computer system  700  opens the financial application but does not display some or all of the account information for Jane&#39;s accounts (e.g., shown in  FIG.  7 J ). Thus, in some embodiments, computer system  700  allows a user to open the financial application without being able to obtain sensitive information related to Jane&#39;s account. In some embodiments, at  FIG.  7 K , computer system  700  displays a request for the user to provide full biometric authentication in response to detecting tap input  750   i   1  of  FIG.  7 I . 
     Computer system  700  is not limited to providing different access privileges for only financial applications based on whether computer system  700  was unlocked via full biometric authentication or the alternative authentication method. It is understood that computer system  700  can provide different access privileges for any application that a user can interact with via computer system  700 . For example, in response to detecting tap input  750   i   2  on passwords application icon  740   c , computer system  700  opens a passwords application (e.g., an application for storing passwords) when full biometric authentication has been used to unlock computer system  700  but does not open the passwords application when the alternative authentication method has been used to unlock computer system  700 . In some embodiments, computer system  700  allows a user to update and/or delete one or more passwords in the passwords application and/or perform one or more operations when full biometric authentication has been used to unlock computer system  700  but does not allow a user to update and/or delete one or more passwords in the passwords application and/or perform one or more operations when the alternative authentication method has been used to unlock computer system  700 . 
     Turning back to  FIG.  7 I , computer system  700  detects press-and-hold input  750   i   4  on display  710 . As illustrated in  FIG.  7 L , in response to detecting press-and-hold input  750   i   4 , computer system  700  displays delete affordance  740   cl  near passwords application icon  740   c .  FIGS.  7 M- 7 N  illustrate alternative embodiments that are provided to describe the different access-privileges for an operation that computer system  700  can provide to a user who has been authenticated via full biometric authentication (e.g., as described above in relation to  FIGS.  7 A- 7 D ) and a user who has been authenticated via the alternative authentication method (e.g., as described above in relation to  FIGS.  7 E- 7 G ). In particular,  FIG.  7 M  illustrates an embodiment where the user has been authenticated via full biometric authentication and  FIG.  7 N  illustrates an embodiment where the user has been authenticated via the alternative authentication method (e.g., as described above in relation to  FIGS.  7 E- 7 G ). At  FIG.  7 L , computer system  700  detects tap input  750   l  on delete affordance  740   c   1  and, as described below, displays the user interface of  FIG.  7 M  or the user interface of  FIG.  7 N  based on the authentication method that was used to unlock computer system  700 . 
     As illustrated in  FIG.  7 M , in response to detecting tap input  750   l , computer system  700  displays menu  746  that includes delete application option  746   a , remove-from-home-screen option  746   b , and cancel option  746   c . At  FIG.  7 M , computer system  700  displays menu  746  because user  760  has been authenticated via full biometric authentication to unlock computer system  700  (e.g., sometime after computer system  700  is transitioned to the unlocked state, as described above in relation to  FIGS.  7 A- 7 D ). In some embodiments, in response to receiving tap input  750   m  on delete application option  746   a , computer system  700  uninstalls the passwords application that corresponds to passwords application icon  740   c . In some embodiments, computer system  700  uninstalls the passwords application because user  760  has been authenticated via full biometric authentication to unlock computer system  700 . 
     Alternatively, as illustrated in  FIG.  7 N , computer system  700  displays prompt  748  in response to detecting tap input  750   l . Prompt  748  indicates that the user does not have permission to perform the delete operation and/or display menu  746  of  FIG.  7 M . At  FIG.  7 N , computer system  700  displays prompt  748  instead of displaying menu  746  because the alternative authentication method was used to unlock computer system  700  (and the user does not have the access-privileges to perform one or more of the operations provided by menu  746 ). Thus, as compared to  FIG.  7 M  (e.g., full biometric authentication used to unlock computer system  700 ), computer system  700  provides a user with reduced access-privileges at  FIG.  7 N  because the alternative authentication method was used to unlock computer system  700 . In some embodiments, at  FIG.  7 N , computer system  700  displays a modified version of menu  746  with only the options that the user are allowed to perform (e.g., the operation associated with cancel option  746   c ) when the alternative authentication method was used to unlock computer system  700 . In some embodiments, at  FIG.  7 N , computer system  700  displays menu  746  but, in response to detecting an input on one of the options on menu  746 , does not perform an operation associated with the option on menu  746  (e.g., does not delete the passwords application when an input on delete application option  746   a  is deleted). In some embodiments, at  FIG.  7 N , computer system  700  displays menu  746  but, in response to detecting an input on one of the options on menu  746 , displays prompt  748  to indicate that the user does not have permission to perform the particular operation. In some embodiments, at  FIG.  7 N , in response to detecting an input on one of the options on menu  746 , computer system  700  initiates a process for completing full biometric authentication to allow the user to perform the operation that is associated with the option on menu  746 . 
       FIG.  7 O  illustrates an embodiment where computer system  700  provides the same access-privileges for an application, irrespective of the authentication method that was used to unlock computer system  700 . Looking back at  FIG.  7 I , computer system  700  detects tap input  750   i   3  on browser application icon  740   b . As illustrated in  FIG.  7 O , in response to detecting tap input  750   i   3 , computer system  700  opens a browser application that corresponds to browser application icon  740   b  and displays a browser user interface  752 . At  FIG.  7 O , computer system  700  opens the browser application and displays browser user interface  752  in response to detecting tap input  750   i   3 , irrespective of the authentication method that was used to unlock computer system  700 . Thus, for some applications, computer system  700  can provide the same access-privileges regardless of which authentication method was used to unlock computer system  700  (e.g., as opposed to detecting tap input  750   i   1  and  750   i   2 , as discussed above in relation to  FIGS.  7 J- 7 K ). In some embodiments, computer system  700  provides limited access-privileges, such as read-only privileges (e.g., cannot update/delete), basic feature only privileges (e.g., can browse the web, listen to music), no secure information privileges (e.g., no access to financial application and/or payment processing application) when (e.g., or after) the alternative authentication method is used to unlock computer system  700 . In some embodiments, the level/type (e.g., read-only, basic feature only) of the limited access-privileges is provided by computer system  700  based on whether a user could be fully authenticated using the alternative authentication method (e.g., voice input being received as the alternative authenticated method that is detected with background noise can cause a reduced set of privileges than voice input being received as the alternative authentication method without background noise, as described below in relation to  FIGS.  8 A- 8 D ). Thus, in some embodiments, the level/type of the limited access-privileges is provided by computer system  700  based on whether user actions when completing the alternative authentication method satisfy various confidence thresholds (e.g., user action to complete an alternative authentication method satisfying 90% confidence threshold has more reduced access-privileges than user action to complete the alternative authentication method satisfying the 95% confidence threshold). 
       FIGS.  7 P- 7 S  illustrates one or more exemplary user interfaces that are displayed on display  710  of computer system  700 . In particular, the one or more exemplary user interfaces of  FIGS.  7 P- 7 S  are described in relation to an exemplary scenario where user  760  attempts to use biometric authentication (e.g., while wearing a mask) to download an application. One reason why  FIGS.  7 P- 7 S  are provided to show that secure operation other than unlocking computer system  700  can be performed using the same techniques as described above in relation to  FIGS.  7 E- 7 H . 
     At  FIG.  7 P , user  760  wishes to download an application (e.g., “Account App”) while wearing mask  728  but is unable to do so without authenticating. As illustrated in  FIG.  7 Q , computer system  700  displays notification  764  to confirm downloading of the application by pressing the side button (e.g., “confirm with side button”). In some embodiments, computer system  700  displays notification  764  in response to detecting an input on get option  762   a.    
     At  FIG.  7 Q , computer system  700  detects press input  750   q  on hardware button  702 . In response to detecting press input  750   q , computer system  700  determines that a request to perform a secure operation (e.g., a request to initiate biometric authentication) has been received because a unlock input, such as press input  750   q , has been detected. At  FIG.  7 Q , because press input  750   q  was detected and it was determined that the request to perform a secure operation has been received, computer system  700  initiates biometric authentication. After initiating biometric authentication, computer system  700  determines that only upper portion  760   a  of the face of user  760  is available to be captured by biometric sensor  704 . At  FIG.  7 Q , because the determination was made that that only upper portion  760   a  of the face of user  760  is available to be captured by biometric sensor  704 , computer system  700  determines that biometric authentication using only upper portion  760   a  is successful because only upper portion  760   a  that is captured in  FIG.  7 P  matches (or significantly matches) the enrolled portion of biometric feature that corresponds to user  760 . 
     As illustrated in  FIG.  7 R , successful because only upper portion  760   a  that is captured in  FIG.  7 P  matches (or significantly matches) the enrolled portion of biometric feature that corresponds to user  760  (e.g., partial biometric authentication is successful), computer system  700  displays prompt  766  and external accessory device  790  displays prompt  796  (e.g., using similar techniques as described above in relation to prompt  734  of  FIG.  7 G ). Prompt  766  and prompt  798  indicate that an alternative authentication method can be used to perform the secure transaction (e.g., “TAP TO AUTHORIZE”). At  FIG.  7 R , tap input  750   r  is detected on the display of external accessory device  790 . 
     At  FIG.  7 S , in response to the detection of tap input  750   r , computer system  700  downloads the application (e.g., “Account App”) and replaces get option  762   a  of  FIG.  7 R  with open option  762   b  of  FIG.  7 S . In some embodiments, computer system  700  does not authorize downloading an application when only a portion of the biometric feature is available and the alternative authentication method has been completed. In some embodiments, individual settings (or multiple settings for each) are displayed to individually control whether or not computer system  700  will authenticate using only a portion of the biometric feature and the alternative authentication method for an individual secure operation. 
       FIGS.  7 T- 7 V  illustrate one or more exemplary user interfaces that are displayed on display  710  of computer system  700 . In particular, the one or more exemplary user interfaces of  FIG.  7 T- 7 V  are described in relation to an exemplary scenario where user  770  attempts to use biometric authentication (e.g., while wearing a mask) to unlock computer system  700  and an alternative authentication method for authenticating is not provided to the user because full biometric authentication and partial biometric authentication is not successful. 
     At  FIG.  7 U , computer system  700  displays notification  714 , which indicates that a message from John Appleseed has been received. User  770  (e.g., John) wishes to view the restricted content of notification  714  (e.g., the message from John Appleseed) but is unable to do so, as computer system  700  is currently in a locked state (e.g., as indicated by lock indicator  712   a ). As illustrated in  FIG.  7 U , computer system  700  displays a locked state user interface with lock indicator  712   a , which provides an indication that computer system  700  is in a locked state. At  FIG.  7 U , computer system  700  detects upward swipe input  750   u  on user interface object  716  and determines that a request to perform a secure operation (e.g., a request to initiate biometric authentication) has been received because an unlock input, such as an upward swipe input  750   u , has been detected. At  FIG.  7 U , in response to detecting upward swipe input  750   u  and determining that the request to perform a secure operation has been received, computer system  700  initiates a biometric authentication process. 
     At  FIG.  7 U , as a part of the biometric authentication process, computer system  700  determines that the face of user  770  (e.g., biometric data) that is being captured by biometric sensor  704  does not match an enrolled biometric feature (e.g., full biometric authentication is unsuccessful) and also determines that the portion  770   a  does not match the enrolled portion of the biometric feature (e.g., partial biometric authentication is unsuccessful) (e.g., as indicated by indication  788   c ). Here, biometric data captured via biometric sensor  704  does not match the enrolled biometric feature and the enrolled portion of the biometric feature because computer system  700  does not have an enrolled biometric profile stored for user  770  like it has for user  760 . 
     As illustrated in  FIG.  7 V , because computer system  700  determined that the biometric data that is being captured by biometric sensor  704  does not match the enrolled biometric feature and the enrolled portion of the biometric feature, computer system  700  remains in the locked state (e.g., is not transitioned to the unlocked state). In addition, computer system  700  and/or external accessory device  790  does not display a prompt indicating that an alternative authentication method can be performed to transition computer system  700  to a locked state because computer system  700  determined that the biometric data that is being captured by biometric sensor  704  does not match the enrolled biometric feature and the enrolled portion of the biometric feature. Notably, although computer system  700  detects a portion of the face of user  770 , computer system  700  does not perform the secure operation and does not provide an alternative way to the user to unlock computer system  700  because user  770  is not enrolled and/or the captured biometric data does not sufficiently match a portion of the biometric feature. Moreover, computer system  700  is not configured to perform the secure operation when an alternative authentication method (e.g., tap input on external accessory device  790 ) is received without a prompt to perform the alternative authentication method is displayed. Thus, in some embodiments, computer system  700  remains in the locked state in response to detecting a tap input on the display of external accessory device  790  (and/or in response to detecting an alternative authentication method). 
     While  FIGS.  7 A- 7 V  describe computer system  700  using various authentication techniques to determine whether to unlock computer system  700  and/or confirming an application for downloading (or, in general, downloading a file), the discussion of  FIGS.  7 A- 7 V  can also be adapted to work with other secure operations that require authentication, such as authorizing the auto-filling of a password/passcode, performance of a transaction (e.g., using one or more components as discussed in  FIG.  6   ), changing system configurations, etc. 
       FIGS.  8 A- 8 D  illustrate exemplary user interfaces for providing authentication at a computer system in accordance with some embodiments. In particular,  FIGS.  8 A- 8 D  are provided to show an alternative authentication method that can be used in conjunction with and/or in lieu of the alternative authentication methods described above in relation to  FIGS.  7 E- 7 H  and below in relation to  FIGS.  9 A- 9 D ,  FIGS.  10 A- 10 D ,  FIGS.  11 A- 11 D ,  FIGS.  12 A- 12 D , and  FIGS.  13 A- 13 F . The alternative authentication method described below in relation to  FIGS.  8 A- 8 D  can be swapped out and/or included with the alternative authentication method described above in relation to  FIGS.  7 A- 7 V  (e.g., tap on watch to unlock). The alternative authentication method described in relation to  FIGS.  8 A- 8 D  involves the detection of voice input (e.g., by computer system  700  and/or an external accessory device, such external accessory device  790 ) that is used to authenticate the user and cause computer system  700  to be transitioned from the locked state to an unlocked state. 
     As illustrated in  FIG.  8 A , user  760  is holding computer system  700  while wearing mask  728  and external accessory device  790 . At  FIG.  8 B , computer system  700  displays notification  714 , which indicates that a message from John Appleseed has been received. At  FIG.  8 B , computer system  700  detects upward swipe input  850   b . At  FIG.  8 B , in response to detecting upward swipe input  850   b , computer system  700  initiates a biometric authentication process. At  FIG.  8 B , computer system  700  determines that full biometric authentication is unsuccessful and partial biometric authentication is successful (e.g., as indicated by indication  788   b , “PARTIAL MATCH DETECTED”) based on upper portion  760   a  being captured by biometric sensor  704  (e.g., for similar reasons as described above in relation to  FIG.  7 F ). 
     As illustrated in  FIG.  8 C , because the full biometric authentication is unsuccessful, computer system  700  remains in the locked state (e.g., as indicated by lock indicator  712   a , for similar reasons as described above in relation to  FIG.  7 G ). As illustrated in  FIG.  8 C , computer system  700  displays prompt  844  because computer system  700  determined that full biometric authentication is unsuccessful and partial biometric authentication is successful (e.g., for similar reasons as described above in relation to displaying prompt  734  in  FIG.  7 G ). Prompt  844  indicates that an alternative authentication method can be used to perform the secure operation. In particular, prompt  844  indicates that a user will need to provide voice input that includes “UNLOCK MY PHONE” in order to unlock computer system  700 . In some embodiments, prompt  844  can be updated to include other phrases to indicate that a user will need to provide additional voice input to unlock computer system  700 . In some embodiments, prompt  844  is updated to include a new phrase after voice input is detected that includes the previously displayed phrase and/or voice input that includes the previously displayed phrase is verified. In some embodiments, computer system  700  automatically generates the phrase. In some embodiments, computer system  700  generates the phrase from a group or predefined set of phrases that are associated with a voice profile that corresponds to one or more users (e.g., user  760  and not user  770 ) of computer system  700 . In some embodiments, a prompt that is similar to prompt  844  is displayed on an external accessory device because computer system  700  determined that full biometric authentication is unsuccessful and partial biometric authentication is successful. 
     At  FIG.  8 D , computer system  700  detects voice input  850   d  that includes the phrase “UNLOCK MY PHONE” via one or more microphones of computer system  700 . In some embodiments, an external accessory device (e.g., external accessory device  790 ) detects voice input  850   d ). In some embodiments, upon a determination that the voice input matches (e.g., sufficiently matches within a certain level of confidence (e.g., 80-100%) an enrolled voice profile, computer system  700  is transitioned from the locked state to an unlocked state (e.g., similar to the transition described above in relation to  FIG.  7 H ). In some embodiments, upon a determination that the voice input does not sufficiently match an enrolled voice profile and/or the voice input does not include the required phrase (e.g., phrase indicated by prompt  844 ), computer system  700  remains in the locked state. In some embodiments, upon a determination that the voice input does not sufficiently match an enrolled voice profile (or any other alternative authentication method fails), computer system  700  provides the opportunity for the user to provide the voice input again (or perform the alternative authentication method again). In some embodiments, computer system  700  requires a determination to be made that full biometric authentication or another form of authentication (e.g., password authentication) is successful before computer system  700  can be unlocked once a predetermined number (e.g., 1-5) of attempts have been made to provide the required voice input (or to authenticate via the alternative authentication method successfully). In some embodiments, upon a determination that the voice input does not sufficiently match an enrolled voice profile (or any other alternative authentication method fails), computer system  700  is transitioned to the unlocked state, and computer system  700  provides a limited set of access-privileges (e.g., as described above in relation to  FIGS.  7 I- 7 O ). 
       FIGS.  9 A- 9 D  illustrate exemplary user interfaces for providing authentication at a computer system in accordance with some embodiments. In particular,  FIGS.  9 A- 9 D  are provided to show an alternative authentication method that can be used in conjunction with and/or in lieu of the alternative authentication methods described herein in relation to  FIGS.  7 E- 7 H ,  FIGS.  8 A- 8 D ,  FIGS.  10 A- 10 D ,  FIGS.  11 A- 11 D ,  FIGS.  12 A- 12 D , and  FIGS.  13 A- 13 F . The alternative authentication method described below in relation to  FIGS.  9 A- 9 D  can be swapped out and/or included with the alternative authentication method described above in relation to  FIGS.  7 A- 7 V  (e.g., tap on watch to unlock). The alternative authentication method described in relation to  FIGS.  9 A- 9 D  involves the detection of a press input on a hardware component of external accessory device  790 . 
     As illustrated in  FIG.  9 A , user  760  is holding computer system  700  while wearing mask  728  and external accessory device  790 . At  FIG.  9 B , computer system  700  displays notification  714 , which indicates that a message from John Appleseed has been received. At  FIG.  9 B , computer system  700  detects upward swipe input  950   b . At  FIG.  9 B , in response to detecting upward swipe input  950   b , computer system  700  initiates a biometric authentication process and determines that full biometric authentication is unsuccessful and partial biometric authentication is successful (e.g., as indicated by indication  788   b , “PARTIAL MATCH DETECTED”) based on upper portion  760   a  being captured by biometric sensor  704  (e.g., for similar reasons as described above in relation to  FIG.  7 F ). 
     As illustrated in  FIG.  9 C , because the full biometric authentication is unsuccessful, computer system  700  remains in the locked state (e.g., as indicated by lock indicator  712   a , for similar reasons as described above in relation to  FIG.  7 G ). As illustrated in  FIG.  9 C , computer system  700  displays prompt  944  and external accessory device  790  displays prompt  994  because computer system  700  determined that full biometric authentication is unsuccessful and partial biometric authentication is successful (e.g., for similar reasons as described above in relation to displaying prompt  734  in  FIG.  7 G ). Prompt  944  and prompt  994  indicate that an alternative authentication method can be used to perform the secure operation. In particular, prompt  944  and prompt  994  indicate the crown on external accessory device  790  will need to be pressed before computer system  700  can be unlocked. At  FIG.  9 D , press input  950   d  is detected on hardware button  792  (e.g., crown of external accessory device  790 ). In some embodiments, in response to the detection of press input  950   d , computer system  700  is transitioned from the locked state to an unlocked state (e.g., similar to the transition described above in relation to  FIG.  7 H ). In some embodiments, in response to no detection of a press input on hardware button  792 , computer system  700  remains in the locked state. While  FIGS.  9 A- 9 D  describe an alternative authentication method that involves pressing hardware button  792 , one or more other alternative authentication methods can require interactions with hardware components of computer system  700  and/or external accessory device  790 , such as rotating a hardware component (e.g., hardware button  792 ), pressing a component element for a predetermined period of time, providing multiple inputs and/or different types of inputs to one or more different hardware components. 
       FIGS.  10 A- 10 D  illustrate exemplary user interfaces for providing authentication at a computer system in accordance with some embodiments. In particular,  FIGS.  10 A- 10 D  are provided to show an alternative authentication method that can be used in conjunction with and/or in lieu of the alternative authentication methods described herein in relation to  FIGS.  7 E- 7 H ,  FIGS.  8 A- 8 D ,  FIGS.  9 A- 9 D ,  FIGS.  11 A- 11 D ,  FIGS.  12 A- 12 D , and  FIGS.  13 A- 13 F . The alternative authentication method described below in relation to  FIGS.  10 A- 10 D  can be swapped out and/or included with the alternative authentication method described above in relation to  FIGS.  7 A- 7 V  (e.g., tap on watch to unlock). The alternative authentication method described in relation to  FIGS.  10 A- 10 D  involves the rotation of external accessory device  790 . 
     As illustrated in  FIG.  10 A , user  760  is holding computer system  700  while wearing mask  728  and external accessory device  790 . At  FIG.  10 B , computer system  700  displays notification  714 , which indicates that a message from John Appleseed has been received. At  FIG.  10 B , computer system  700  detects upward swipe input  1050   b . At  FIG.  10 B  in response to detecting upward swipe input  1050   b , computer system  700  initiates a biometric authentication process and determines that full biometric authentication is unsuccessful and partial biometric authentication is successful (e.g., as indicated by indication  788   b , “PARTIAL MATCH DETECTED”) based on upper portion  760   a  being captured by biometric sensor  704  (e.g., for similar reasons as described above in relation to  FIG.  7 F ). 
     As illustrated in  FIG.  10 C , because the full biometric authentication is unsuccessful, computer system  700  remains in the locked state (e.g., as indicated by lock indicator  712   a , for similar reasons as described above in relation to  FIG.  7 G ). As illustrated in  FIG.  10 C , computer system  700  displays prompt  1044  and external accessory device  790  displays prompt  1094  because computer system  700  determined that full biometric authentication is unsuccessful and partial biometric authentication is successful (e.g., for similar reasons as described above in relation to displaying prompt  734  in  FIG.  7 G ). Prompt  1044  and prompt  1094  indicate that an alternative authentication method can be used to perform the secure operation. In particular, prompt  1044  and prompt  1094  indicate external accessory device  790  will need to be rotated before computer system  700  can be unlocked. At  FIG.  10 D , rotation input  1050   d  is detected and/or external accessory device  790  is determined to have been rotated (e.g., based on data gathered from one or more accelerometers and/or gyroscopes include in external accessory device  790 ). In some embodiments, in response to the detection of rotation input  1050   d , computer system  700  is transitioned from the locked state to an unlocked state (e.g., similar to the transition described above in relation to  FIG.  7 H ). In some embodiments, in response to no detection of a rotation input, computer system  700  remains in the locked state. While FIGS.  10 A- 10 D describe an alternative authentication method that involves rotating external accessory device  790 , one or more other alternative authentication methods can require moving computer system  700  and/or external accessory device  790  in different ways, such as lifting, dropping, and/or shaking computer system  700  and/or external accessory device  790 . In some embodiments, the one or more alternative authentication methods can require moving (e.g., rotating) computer system  700  and/or external accessory device  790  in a certain pattern (e.g., rotate right followed by rotate left) of a set of predefined motions and prompt  1044  and prompt  1094  can be updated after each motion in the set is completed (e.g., to inform a user of the new motion that is required to unlock computer system  700 ). 
       FIGS.  11 A- 11 D  illustrate exemplary user interfaces for providing authentication at a computer system in accordance with some embodiments. In particular,  FIGS.  11 A- 11 D  are provided to show an alternative authentication method that can be used in conjunction with and/or in lieu of the alternative authentication methods described herein in relation to  FIGS.  7 E- 7 H ,  FIGS.  8 A- 8 D ,  FIGS.  9 A- 9 D ,  FIGS.  10 A- 10 D ,  FIGS.  12 A- 12 D , and  FIGS.  13 A- 13 F . The alternative authentication method described below in relation to  FIGS.  11 A- 11 D  can be swapped out and/or included with the alternative authentication method described above in relation to  FIGS.  7 A- 7 V  (e.g., tap on watch to unlock). The alternative authentication method described in relation to  FIGS.  11 A- 11 D  involves touching (e.g., tapping) computer system  700  with external accessory device  790 , or vice versa. 
     As illustrated in  FIG.  11 A , user  760  is holding computer system  700  while wearing mask  728  and external accessory device  790 . At  FIG.  11 B , computer system  700  displays notification  714 , which indicates that a message from John Appleseed has been received. At  FIG.  11 B , computer system  700  detects upward swipe input  1150   b . At  FIG.  11 B , in response to detecting upward swipe input  1150   b , computer system  700  initiates a biometric authentication process and determines that full biometric authentication is unsuccessful and partial biometric authentication is successful (e.g., as indicated by indication  788   b , “PARTIAL MATCH DETECTED”) based on upper portion  760   a  being captured by biometric sensor  704  (e.g., for similar reasons as described above in relation to  FIG.  7 F ). 
     As illustrated in  FIG.  11 C , because the full biometric authentication is unsuccessful, computer system  700  remains in the locked state (e.g., as indicated by lock indicator  712   a , for similar reasons as described above in relation to  FIG.  7 G ). As illustrated in  FIG.  11 C , computer system  700  displays prompt  1144  and external accessory device  790  displays prompt  1194  because computer system  700  determined that full biometric authentication is unsuccessful and partial biometric authentication is successful (e.g., for similar reasons as described above in relation to displaying prompt  734  in  FIG.  7 G ). Prompt  1144  and prompt  1194  indicate that an alternative authentication method can be used to perform the secure operation. In particular, prompt  1144  and prompt  1194  indicates that computer system  700  will need to be tapped with external accessory device  790  before computer system  700  can be unlocked. At  FIG.  11 D , computer system  700  is forcibly tapped with external accessory device  790  (e.g., or vice-versa) by user  760 . In some embodiments, a determination is made that computer system  700  has been tapped by external accessory device  790  based on data gathered from one or more accelerometers and/or gyroscopes include in computer system  700  and/or external accessory device  790 . In some embodiments, because the determination is made that computer system  700  has been forcibly tapped with external accessory device  790  (e.g., or vice-versa), computer system  700  is transitioned from the locked state to an unlocked state (e.g., similar to the transition described above in relation to  FIG.  7 H ). In some embodiments, when no determination is made that computer system  700  has been forcibly tapped with external accessory device  790  (e.g., or vice-versa), computer system  700  remains in the locked state. While  FIGS.  11 A- 11 D  describe an alternative authentication method that involves rotating external accessory device  790 , one or more other alternative authentication methods can require tapping the computer system  700  with the external accessory device  790  (e.g., or vice-require) in other ways, such as requiring that the respective devices be tapped a predetermined number of times, requiring that the respective devices be tapped with vary levels of intensities (e.g., hard tap followed by a softer tap). 
       FIGS.  12 A- 12 D  illustrate exemplary user interfaces for providing authentication at a computer system in accordance with some embodiments. In particular,  FIGS.  12 A- 12 D  are provided to show an alternative authentication method that can be used in conjunction with and/or in lieu of the alternative authentication methods described herein in relation to  FIGS.  7 E- 7 H ,  FIGS.  8 A- 8 D ,  FIGS.  9 A- 9 D ,  FIGS.  10 A- 10 D ,  FIGS.  11 A- 11 D , and  FIGS.  13 A- 13 F . The alternative authentication method described below in relation to  FIGS.  12 A- 12 D  can be swapped out and/or included with the alternative authentication method described above in relation to  FIGS.  7 A- 7 V  (e.g., tap on watch to unlock). The alternative authentication method described in relation to  FIGS.  12 A- 12 D  involves squeezing earbud  1200  (e.g., an external accessory device). While  FIGS.  12 A- 12 D  involves squeezing earbud  1200 , it should be understood that other external accessory devices (e.g., external accessory device  790 ) can also be squeezed as an alternative authentication method. 
     As illustrated in  FIG.  12 A , user  760  is holding computer system  700  while wearing mask  728 , external accessory device  790 , and earbud  1200 . At  FIG.  12 B , computer system  700  displays notification  714 , which indicates that a message from John Appleseed has been received. At  FIG.  12 B , computer system  700  detects upward swipe input  1250   b . At  FIG.  12 B , in response to detecting upward swipe input  1250   b , computer system  700  initiates a biometric authentication process and determines that full biometric authentication is unsuccessful and partial biometric authentication is successful (e.g., as indicated by indication  788   b , “PARTIAL MATCH DETECTED”) based on upper portion  760   a  being captured by biometric sensor  704  (e.g., for similar reasons as described above in relation to  FIG.  7 F ). 
     As illustrated in  FIG.  12 C , because the full biometric authentication is unsuccessful, computer system  700  remains in the locked state (e.g., as indicated by lock indicator  712   a , for similar reasons as described above in relation to  FIG.  7 G ). As illustrated in  FIG.  12 C , computer system  700  displays prompt  1244  because computer system  700  determined that full biometric authentication is unsuccessful and partial biometric authentication is successful (e.g., for similar reasons as described above in relation to displaying prompt  734  in  FIG.  7 G ). Prompt  1244  indicates that an alternative method can be used to perform the secure operation. In particular, prompt  1244  indicates that earbud  1200  will need to be squeezed before computer system  700  can be unlocked. In some embodiments, earbud  1200  outputs an audible prompt that indicates that an alternative method can be used to perform the secure operation (e.g., that earbud  1200  will need to be squeezed before computer system  700  can be unlocked). 
     At  FIG.  12 D , squeeze input  1250   d  is detected on earbud  1200 . In some embodiments, in response to the detection of squeeze input  1250   d , computer system  700  is transitioned from the locked state to an unlocked state (e.g., similar to the transition described above in relation to  FIG.  7 H ). In some embodiments, when no squeeze input is detected, computer system  700  remains in the locked state. While  FIGS.  12 A- 12 D  describe an alternative authentication method that involves squeezing earbud  1200 , one or more other alternative authentication methods can require interacting with external accessory devices in other ways, such as requiring a particular earbud to be squeezed (e.g., right earbud, left earbud) a particular amount of times (1-5 times) and/or for a predetermined amount of time (5-30 seconds), requiring a set of external accessory devices to be squeezed in a certain sequence (e.g., squeeze right earbud, squeeze left earbud). 
       FIGS.  13 A- 13 F  illustrate exemplary user interfaces for providing authentication at a computer system in accordance with some embodiments. In particular,  FIGS.  13 A- 13 F  are provided to show an alternative authentication method that can be used in conjunction with and/or in lieu of the alternative authentication methods described herein in relation to  FIGS.  7 E- 7 H ,  FIGS.  8 A- 8 D ,  FIGS.  9 A- 9 D ,  FIGS.  10 A- 10 D ,  FIGS.  11 A- 11 D , and  FIGS.  12 A- 12 D . The alternative authentication method described below in relation to  FIGS.  13 A- 13 F  can be swapped out and/or included with the alternative authentication method described above in relation to  FIGS.  7 A- 7 V  (e.g., tap on watch to unlock). The alternative authentication method described in relation to  FIGS.  13 A- 13 F  involves satisfying multiple authentication criteria (e.g., a confirmation input, following by a near-field communication input). 
     As illustrated in  FIG.  13 A , user  760  is holding computer system  700  while wearing mask  728  and external accessory device  790 . At  FIG.  13 B , computer system  700  displays notification  714 , which indicates that a message from John Appleseed has been received. At  FIG.  13 B , computer system  700  detects upward swipe input  1350   b . At  FIG.  13 B , in response to detecting upward swipe input  1350   b , computer system  700  initiates a biometric authentication process and determines that full biometric authentication is unsuccessful and partial biometric authentication is successful (e.g., as indicated by indication  788   b , “PARTIAL MATCH DETECTED”) based on upper portion  760   a  being captured by biometric sensor  704  (e.g., for similar reasons as described above in relation to  FIG.  7 F ). 
     As illustrated in  FIG.  13 C , because the full biometric authentication is unsuccessful, computer system  700  remains in the locked state (e.g., as indicated by lock indicator  712   a , for similar reasons as described above in relation to  FIG.  7 G ). As illustrated in  FIG.  13 C , computer system  700  displays prompt  1344  because computer system  700  determined that full biometric authentication is unsuccessful and partial biometric authentication is successful (e.g., for similar reasons as described above in relation to displaying prompt  734  in  FIG.  7 G ). Prompt  1344  indicates that an alternative method can be used to perform the secure operation. In particular, prompt  1344  indicates that hardware button  702  will need to be pressed before computer system  700  can be unlocked (e.g., “CONFIRM WITH SIDE BUTTON”). At  FIG.  13 C , computer system  700  detects press input  1350   c.    
     As illustrated in  FIG.  13 D , in response to detecting press input  1350   c , computer system  700  updates prompt  1344  to indicate that computer system  700  needs to be brought near external accessory device  790 . In addition, external accessory device  790  displays prompt  1344 , which provides a similar indication as prompt  1394 . As illustrated in  FIGS.  13 E- 13 F , user  760  positions computer system  700  and external accessory device  790  closer together. At  FIG.  13 E- 13 F , computer system  700  and external accessory device  790  communicate using a near-field communication (NFC) protocol. In some embodiment, when it is determined that computer system  700  and external accessory device  790  have communicated via the NFC protocol successfully, computer system  700  is transitioned to the unlocked state. In some embodiments, as a part of determining that computer system  700  and external accessory device  790  have communicated via the NFC protocol successfully, a determination is made that computer system  700  and external accessory device  790  have communicated and passed certain verification parameters (such as verifying that computer system  700  and external accessory device  790  are both associated with user  760  and/or the same set of users). In some embodiments, when it is determined that computer system  700  and external accessory device  790  have not communicated via the NFC protocol successfully, computer system  700  remains in the locked state. 
       FIGS.  14 A- 14 B  are a flow diagram illustrating a method for providing authentication at a computer system in accordance with some embodiments. Method  1400  is performed at a computer system (e.g.,  100 ,  300 ,  500 ,  700 ) (e.g., a smartphone, a tablet) that is in communication with (e.g., wirelessly or by wire; integrates or includes) one or more biometric sensors (e.g.,  704 ) (e.g., a fingerprint sensor, a facial recognition sensor (e.g., one or more depth sensors; one or more cameras (e.g., dual cameras, triple camera, quad cameras, etc.)) on the same side or different sides of the computer system (e.g., a front camera, a back camera)), an iris scanner) (e.g., is hidden or concealed), one or more input devices (e.g.,  710 ,  702 ) (e.g., a touch-sensitive surface, an accelerometer, a hardware button), and an external accessory device (e.g.,  790 ) (e.g., an external peripheral device) (e.g., a computer system (e.g., a wearable device ((e.g., a smartwatch, headphones, glasses)), a device that is external to (e.g., not physically linked to or connected to) the computer system, a device that is in communication with the computer system via a communication channel, a device with a display generation component and one or more input devices). Some operations in method  1400  are, optionally, combined, the orders of some operations are, optionally, changed, and some operations are, optionally, omitted. 
     As described below, method  1400  provides an intuitive way for providing authentication at a computer system. The method reduces the cognitive burden on a user for providing authentication at a computer system, thereby creating a more efficient human-machine interface. For battery-operated computing devices, enabling a user to provide authentication at a computer system faster and more efficiently conserves power and increases the time between battery charges. 
     The computer system (e.g.,  700 ) receives ( 1402 ), via the one or more input devices (e.g.,  702 ,  710 ), a request (e.g.,  750   b ,  750   f ,  750   u ,  850   b ,  950   b ,  1050   b ,  1150   b ,  1250   b ,  1350   b ) to unlock the computer system (and/or receiving a request to perform a secure operation with the computer system (e.g., unlocking the computer system)) while the computer system is in a locked state (e.g., as indicated by  712   a ) (e.g., a state where the computer system is locked and/or a state where one or more functions of the computer system are not available without providing authentication). In some embodiments, the request (e.g., as described above in relation to  FIGS.  7 P- 7 S ) is a request to authorize a payment with the computer system, download an application, authorize use of a secure credential with the computer system, access a restricted application or restricted information with the computer system, and/or auto-fill information with the computer system. 
     In response to ( 1404 ) receiving the request (e.g.,  750   b ,  750   f ,  750   u ,  850   b ,  950   b ,  1050   b ,  1150   b ,  1250   b ,  1350   b ) to unlock the computer system (e.g.,  700 ) (and/or, in some embodiments, in response to the request to perform a secure operation (e.g., unlock operation, content viewing operation, secure payment operation, a secure operation that are available to be performed when the first setting is enabled)): in accordance with a determination that a first set of biometric identification criteria is satisfied (e.g., as described above in relation to  FIGS.  7 A- 7 D ) (e.g., a set of criteria that is satisfied when the first portion of biometric feature is available to be captured and the biometric data (e.g., that includes data corresponding to the first portion of the biometric feature) satisfies a set of biometric authentication criteria (e.g., a set of criteria that includes a criterion that is satisfied when the biometric data that includes a first portion (e.g.,  760   b ) of biometric feature and a second portion (e.g.,  760   a ) of biometric feature sufficiently matches an authorized biometric profile)), wherein the first set of biometric identification criteria is satisfied when a detected biometric feature (e.g.,  760   a ,  760   b ) detected in conjunction with (e.g., in response to, detected with a predetermined time (e.g., 1-10 seconds) before/after the request is received) the request to unlock the computer system is consistent with (e.g., is determined to match and/or is determined to sufficiently match (e.g., within a confidence threshold level of 90-100%)) an enrolled biometric feature, the computer system (e.g.,  700 ) transitions ( 1406 ) the computer system (e.g.,  700 ) from the locked state (e.g., as indicated by  712   a ) to an unlocked state (e.g., as indicated by  712   b ) (e.g., without outputting a prompt that indicates that one or more interactions with the external accessory device can be used to unlock the computer system) (e.g., as described above in relation to  FIGS.  7 A- 7 D ); and in accordance with a determination that a second set of biometric identification criteria is satisfied (e.g., a set of criteria that is satisfied when a first portion (e.g.,  760   b ) of a biometric feature is not available to be captured and the biometric data (e.g., that does not include data corresponding to the first portion of the biometric feature) satisfies a set of biometric authentication criteria (e.g., a set of criteria that includes a criterion that is satisfied when the biometric data that includes data corresponding to a second portion (e.g.,  760   a ) of biometric feature but does not include data corresponding to the first portion (e.g.,  760   b ) of the biometric data that matches (e.g., sufficiently matches (e.g., within a certain confidence threshold (e.g., above 90%) an authorized biometric profile)) without satisfying the first set of biometric identification criteria (e.g., as described above in relation to  FIGS.  7 E- 7 H ,  FIGS.  8 A- 8 D ,  FIGS.  9 A- 9 D ,  FIGS.  10 A- 10 D ,  FIGS.  11 A- 11 D ,  FIGS.  12 A- 12 D ,  FIGS.  13 A- 13 F ), wherein the second set of biometric identification criteria is satisfied when the detected biometric feature detected in conjunction with (e.g., in response to, detected with a predetermined time (e.g., 1-10 seconds) before/after the request is received) the request (e.g.,  750   b ,  750   f ,  750   u ,  850   b ,  950   b ,  1050   b ,  1150   b ,  1250   b ,  1350   b ) to unlock the computer system (e.g.,  700 ) is partially consistent (e.g., at least a portion of the detected biometric feature is determined to match and/or is determined to sufficiently match (e.g., within a confidence threshold level of 90-100%)) with an enrolled biometric feature, the computer system causes ( 1408 ) an output (e.g., the computer system and/or another computer system to output) of a prompt (e.g.,  734 ,  744 ,  748 ,  766 ,  796 ,  844 ,  944 ,  1044 ,  1094 ,  1144 ,  1194 ,  1244 ,  1344 ,  1394 ) (e.g., a visual, haptic, audio prompt) that indicates that one or more interactions (e.g., further interaction) with the external accessory device can be used (and, in some embodiments, are required) to unlock the computer system (e.g., to perform the secure operation). In some embodiments, in response to receiving the request to unlock the computer system and in accordance with a determination that a set of partial biometric identification criteria are satisfied (e.g., as described above in relation to  FIGS.  7 E- 7 H ,  FIGS.  8 A- 8 D ,  FIGS.  9 A- 9 D ,  FIGS.  10 A- 10 D ,  FIGS.  11 A- 11 D ,  FIGS.  12 A- 12 D ,  FIGS.  13 A- 13 F ), the computer system is maintained in the locked state (e.g., as described above in relation to  FIGS.  7 E- 7 H ,  FIGS.  7 P- 7 S ,  FIGS.  8 A- 8 D ,  FIGS.  9 A- 9 D ,  FIGS.  10 A- 10 D ,  FIGS.  11 A- 11 D ,  FIGS.  12 A- 12 D ,  FIGS.  13 A- 13 F ). 
     After causing ( 1410 ) the output of the prompt (e.g.,  734 ,  744 ,  748 ,  766 ,  796 ,  844 ,  944 ,  1044 ,  1094 ,  1144 ,  1194 ,  1244 ,  1344 ,  1394 ) (and while the computer is in the locked state and the second set of biometric identification criteria are satisfied without satisfying the first set of biometric identification criteria): in accordance with a determination that the one or more interactions (e.g., a tapping on the external accessory device, pressing a button on the external accessory device, moving/rotating the external accessory device, one or more interactions that satisfy a set of unlocking interaction criteria) (e.g., a physical interaction (e.g., on the external accessory device)) (e.g., an interaction that does not cause the accessory device to match data (e.g., data corresponding to a passcode, password, biometric data) received via the interaction to match authorized data (e.g., data corresponding to a passcode, password, biometric data) that was set up previously using the external accessory device) with the external accessory device have been detected (e.g., detected within a predetermined time), the computer system (e.g.,  700 ) transitions ( 1412 ) the computer system (e.g.,  700 ) from the locked state to the unlocked state (and/or, in some embodiments, when the request is a request to authorize a payment with the computer system, authorize use of a secure credential with the computer system, access a restricted application or restricted information with the computer system, and/or auto-fill information with the computer system, performing the respective requested operation) (e.g., as described above in relation to  FIGS.  7 E- 7 H ,  FIGS.  7 P- 7 S ,  FIGS.  8 A- 8 D ,  FIGS.  9 A- 9 D ,  FIGS.  10 A- 10 D ,  FIGS.  11 A- 11 D ,  FIGS.  12 A- 12 D ,  FIGS.  13 A- 13 F ); and in accordance with a determination that the one or more interactions with the external accessory device (e.g.,  790 ) have not been detected (e.g., within the predetermined time), the computer system maintains ( 1414 ) the computer system in the locked state (and/or, in some embodiments, when the request is a request to authorize a payment with the computer system, authorize use of a secure credential with the computer system, access a restricted application or restricted information with the computer system, and/or auto-fill information with the computer system, forgoing performing the respective requested operation) (e.g., as described above in relation to  FIGS.  7 E- 7 H ,  FIGS.  7 P- 7 S ,  FIGS.  8 A- 8 D ,  FIGS.  9 A- 9 D ,  FIGS.  10 A- 10 D ,  FIGS.  11 A- 11 D ,  FIGS.  12 A- 12 D ,  FIGS.  13 A- 13 F ). Choosing whether or not to transition the computer system from the locked state to the unlocked state based on whether one or more interactions with the external accessory device have been detected (e.g., after a determination is made that a second set of biometric identification criteria is satisfied without satisfying a first set of biometric identification criteria) allows the computer system to limit unauthorized performance of unlocking the computer system while providing an additional way to authorize the unlocking of the computer system and improves security because the user is more likely to keep the security features enabled if they are less disruptive to use of the computer system. Providing improved security reduces the unauthorized performance of secure operations which, additionally, reduces power usage and improves battery life of the computer system by enabling the user to use the computer system more securely and efficiently. Causing an output of a prompt indicating that one or more interactions with the external accessory device can be used to unlock the computer system provides the user with feedback about the current state of the authentication process and informs the user of an action that is needed to complete the authentication process and automatically surfaces a relevant function to improve the user-machine interface. Providing improved user feedback and automatically surfaces a relevant function to improve the user-machine interface enhances the operability of the computer system and makes the user-system interface more efficient (e.g., by helping the user to provide proper inputs and reducing user mistakes when operating/interacting with the computer system) which, additionally, reduces power usage and improves battery life of the system by enabling the user to use the computer system more quickly and efficiently. 
     In some embodiments, after transitioning the computer system (e.g.,  700 ) from the locked state to the unlocked state, the computer system (e.g.,  700 ) receives, via the one or more input devices, a request (e.g.,  750   b ,  750   f ,  750   u ,  850   b ,  950   b ,  1050   b ,  1150   b ,  1250   b ,  1350   b ) to perform a secure operation (e.g., other than unlocking the computer system, the request is a request to authorize a payment with the computer system, authorize use of a secure credential with the computer system, access a restricted application or restricted information with the computer system, and/or auto-fill information with the computer system). In some embodiments, in response to receiving the request to perform the secure operation (e.g.,  750   b ,  750   f ,  750   u ,  850   b ,  950   b ,  1050   b ,  1150   b ,  1250   b ,  1350   b ): in accordance with a determination that the first set of biometric identification criteria is satisfied, the computer system (e.g.,  700 ) performs the secure operation (e.g., initiating the performance of the secure operation) (e.g., as described above in relation to  FIGS.  7 E- 7 H ,  FIGS.  7 P- 7 S ,  FIGS.  8 A- 8 D ,  FIGS.  9 A- 9 D ,  FIGS.  10 A- 10 D ,  FIGS.  11 A- 11 D ,  FIGS.  12 A- 12 D ,  FIGS.  13 A- 13 F ); and in accordance with a determination that the second set of biometric identification criteria are satisfied without satisfying the first set of biometric identification criteria, the computer system (e.g.,  700 ) causes a second output of a second prompt (e.g.,  734 ,  744 ,  748 ,  766 ,  796 ,  844 ,  944 ,  1044 ,  1094 ,  1144 ,  1194 ,  1244 ,  1344 ,  1394 ) that indicates that a second one or more interactions with the external accessory device can be used to perform the secure operation; and after causing the second output of the second prompt (e.g.,  734 ,  744 ,  748 ,  766 ,  796 ,  844 ,  944 ,  1044 ,  1094 ,  1144 ,  1194 ,  1244 ,  1344 ,  1394 ) (and while the has not performed the secure operation and the second set of biometric identification criteria are satisfied without satisfying the first set of biometric identification criteria): in accordance with a determination that the second one or more interactions with the external accessory device has been detected, the computer system (e.g.,  700 ) performs the secure operation (e.g., as described above in relation to  FIGS.  7 E- 7 H ,  FIGS.  7 P- 7 S ,  FIGS.  8 A- 8 D ,  FIGS.  9 A- 9 D ,  FIGS.  10 A- 10 D ,  FIGS.  11 A- 11 D ,  FIGS.  12 A- 12 D ,  FIGS.  13 A- 13 F ); and in accordance with a determination that the second one or more interactions with the external accessory device (e.g.,  790 ) have not been detected, the computer system (e.g.,  700 ) forgoes performing the secure operation (e.g., as described above in relation to  FIGS.  7 E- 7 H ,  FIGS.  7 P- 7 S ,  FIGS.  8 A- 8 D ,  FIGS.  9 A- 9 D ,  FIGS.  10 A- 10 D ,  FIGS.  11 A- 11 D ,  FIGS.  12 A- 12 D ,  FIGS.  13 A- 13 F ). In some embodiments, the second prompt is different from (or the same as) the prompt. In some embodiments, the second one or more interactions are different (or the same as) the one or more interactions. Choosing whether or not to perform a secure operation based on whether one or more interactions with the external accessory device have been detected (e.g., after a determination is made that a second set of biometric identification criteria is satisfied without satisfying a first set of biometric identification criteria) allows the computer system to limit unauthorized performance of the secure operation while providing an additional way to authorize the performance of the secure operation and improves security because the user is more likely to keep the security features enabled if they are less disruptive to use of the computer system. Providing improved security reduces the unauthorized performance of secure operations which, additionally, reduces power usage and improves battery life of the computer system by enabling the user to use the computer system more securely and efficiently. Causing a second output of a second prompt indicating that one or more interactions with the external accessory device can be used to perform a secure operation provides the user with feedback about the current state of the authentication process and informs the user of an action that is needed to complete the authentication process and automatically surfaces a relevant function to improve the user-machine interface. Providing improved user feedback and automatically surfaces a relevant function to improve the user-machine interface enhances the operability of the computer system and makes the user-system interface more efficient (e.g., by helping the user to provide proper inputs and reducing user mistakes when operating/interacting with the computer system) which, additionally, reduces power usage and improves battery life of the system by enabling the user to use the computer system more quickly and efficiently. 
     In some embodiments, the second set of biometric identification criteria includes a criterion that is satisfied when a gaze of a user (e.g.,  790 ) directed toward a predetermined portion of the computer system (e.g.,  700 ) (e.g., the display, a particular portion (e.g., an upper portion) of the user interface, etc.) has been detected (e.g., as described above in relation to  FIGS.  7 E- 7 H ) (e.g., via the one or more biometric sensors (e.g., one or more cameras)) (e.g., for a predetermined period of time (e.g., 1-3 seconds)) (e.g., after the request to unlock the computer system was received) (e.g., a gaze of a user looking in the direction of the computer system). In some embodiments, in response to receiving the request to unlock the computer, the computer system detects the gaze of the user (and a determination is made as to whether the gaze of the user has been detected and/or captured for a predetermined period of time). In some embodiments, the second set of biometric identification criteria is not satisfied when a gaze of a user is detected to be looking away from the computer system for a predetermined period of time. In some embodiments, the second set of biometric identification criteria is satisfied when a gaze of a user is detected (or determined) to be looking at the computer system for a predetermined period of time. Causing the output of the prompt indicating that one or more interactions with the external accessory device can be used to unlock the computer system when the gaze of a user has been detected for a predetermined time automatically limits the display of the prompt, so relevant information is surface when a determination is made that the user is intended to complete biometric identification, which provides improved security. Providing improved user feedback and automatically surfaces a relevant function to improve the user-machine interface enhances the operability of the computer system and makes the user-system interface more efficient (e.g., by helping the user to provide proper inputs and reducing user mistakes when operating/interacting with the computer system) which, additionally, reduces power usage and improves battery life of the system by enabling the user to use the computer system more quickly and efficiently. 
     In some embodiments, the computer system (e.g.,  700 ) is in communication with a first output device (e.g.,  710 ) (e.g., a display generation component (e.g., a display generation component (e.g., a display, a touch-sensitive display) of the computer system), a speaker, one or more haptic output devices). In some embodiments, causing the output of the prompt (e.g.,  734 ,  744 ,  748 ,  766 ,  796 ,  844 ,  944 ,  1044 ,  1094 ,  1144 ,  1194 ,  1244 ,  1344 ,  1394 ) (e.g., an audio, haptic, and/or visual prompt) includes outputting the prompt via the first output device (e.g.,  710 ). In some embodiments, as a part of outputting the prompt (e.g.,  734 ,  744 ,  748 ,  766 ,  796 ,  844 ,  944 ,  1044 ,  1094 ,  1144 ,  1194 ,  1244 ,  1344 ,  1394 ) via the first output device (e.g.,  710 ), the computer system (e.g.,  700 ) displays, via the display generation component, the prompt (e.g.,  734 ,  744 ,  748 ,  766 ,  796 ,  844 ,  944 ,  1044 ,  1094 ,  1144 ,  1194 ,  1244 ,  1344 ,  1394 ). In some embodiments, as a part of outputting the prompt via the first output device, the computer system plays, via one or more speakers, audio. In some embodiments, as a part of outputting the prompt via the first output device, the computer system vibrates. Displaying, via the computer system, the prompt indicating that one or more interactions with the external accessory device can be used to unlock the computer system provides the user with feedback about the current state of the authentication process at the computer system and informs the user of an action that is needed to complete the authentication process and automatically surfaces a relevant function to improve the user-machine interface. Providing improved user feedback and automatically surfaces a relevant function to improve the user-machine interface enhances the operability of the computer system and makes the user-system interface more efficient (e.g., by helping the user to provide proper inputs and reducing user mistakes when operating/interacting with the computer system) which, additionally, reduces power usage and improves battery life of the system by enabling the user to use the computer system more quickly and efficiently. 
     In some embodiments, causing the output of the prompt (e.g.,  734 ,  744 ,  748 ,  766 ,  796 ,  844 ,  944 ,  1044 ,  1094 ,  1144 ,  1194 ,  1244 ,  1344 ,  1394 ) (e.g., an audio, haptic, and/or visual prompt) includes transmitting (e.g., sending) (e.g., indirectly transmitting (e.g., via one or more servers), directly transmitting (e.g., from the computer system directly to the external accessory device (e.g., without the use of an intermediate computer system)) one or more instructions that cause the external accessory device (e.g.,  790 ) to output (e.g., via a display; via a haptic output device; via an audio output device) the prompt. In some embodiments, as a part of causing the output of the prompt that indicates that one or more interactions with the external accessory device (e.g.,  790 ) can be used to unlock the computer system, the computer system (e.g.,  700 ) concurrently displays, via the display generation component, a first prompt (e.g.,  734 ,  744 ,  748 ,  766 ,  844 ,  944 ,  1044 ,  1144 ,  1244 ,  1344 ) that corresponds to the prompt and transmits one or more instructions that cause the external accessory device to display a second prompt (e.g.,  796 ,  1094 ,  1194 ,  1394 ) that corresponds to the prompt. In some embodiments, the first prompt (e.g.,  734 ,  744 ,  748 ,  766 ,  844 ,  944 ,  1044 ,  1144 ,  1244 ,  1344 ) is different (e.g., has a different appearance (e.g., size, shape, color), has different words/graphical indicators, has a different number of words/graphical indicators) from the second prompt (e.g.,  796 ,  1094 ,  1194 ,  1394 ). In some embodiments, the first prompt is the same as the second prompt. Displaying, via the external accessory device, the prompt indicating that one or more interactions with the external accessory device can be used to unlock the computer system provides the user with feedback about the current state of the authentication process at the external accessory device and informs the user of an action that is needed to complete the authentication process and automatically surfaces a relevant function to improve the user-machine interface. Providing improved user feedback and automatically surfaces a relevant function to improve the user-machine interface enhances the operability of the computer system and makes the user-system interface more efficient (e.g., by helping the user to provide proper inputs and reducing user mistakes when operating/interacting with the computer system) which, additionally, reduces power usage and improves battery life of the system by enabling the user to use the computer system more quickly and efficiently. 
     In some embodiments, the computer system (e.g.,  700 ) is not a wearable device (e.g., the computer system is a phone, tablet, laptop, desktop) (e.g., the computer system is not a device that is designed (e.g., manufactured to be without the use of a third-party attachment mechanism) to be (or can be) worn as an accessory, or embedded in clothing). 
     In some embodiments, the external accessory device (e.g.,  790 ) is a wearable device (e.g., a watch, headphones) (e.g., the computer system is a device that is designed (e.g., manufactured to be without the use of a third-party attachment mechanism) to be (or can be) worn as an accessory, or embedded in clothing). 
     In some embodiments, the enrolled biometric feature includes data corresponding to a face (e.g.,  760   a ,  760   b ,  760   c ) (e.g., a portion of a face of a user (e.g., a user with a profile that has been enrolled (e.g., set up) on the computer system)) or a fingerprint (e.g., portion of a finger of a user, a user with a profile that has been enrolled (e.g., set up) on the computer system). In some embodiments, the first set of biometric identification criteria and the second set of biometric identification criteria are sets of face identification criteria (e.g., biometric criteria based on the detected face of a user (e.g., matching (and/or authenticating using) data corresponding to the detected face of a user and data corresponding to an enrolled face a user)). In some embodiments, the first set of biometric identification criteria and the second set of biometric identification criteria are sets of fingerprint identification criteria (e.g., biometric criteria based on the detected face of a user (e.g., matching (and/or authenticating using) data corresponding to the detected face of a user and data corresponding to an enrolled face a user)). 
     In some embodiments, the one or more interactions include a gesture (e.g.,  750   g ,  750   r ) (e.g., a tap gesture) (and, in some embodiments, a non-tap gesture (e.g., a press-and-hold gesture, a cover gesture (e.g., a gesture that is detected to cover more than a threshold portion (e.g., 50-70%) of external accessory (e.g.,  790 ) and/or the display generation component of the external accessory device) on a touch-sensitive surface of the external accessory device (e.g., on a display generation component of the external accessory device). Transitioning the computer system from the locked state to the unlocked state in accordance with a determination that one or more interactions that include a gesture on the external accessory device have been detected provides the user with more control over the computer system by allowing a user to authenticate using a particular action. Providing the user with more control of the computer system enhances the operability of the computer system and makes the user-system interface more efficient (e.g., by helping the user to provide proper inputs and reducing user mistakes when operating/interacting with the computer system) which, additionally, reduces power usage and improves battery life of the system by enabling the user to use the computer system more quickly and efficiently. Transitioning the computer system from the locked state to the unlocked state in accordance with a determination that one or more interactions that include a gesture on the external accessory device have been detected improves security by requiring a particular interaction with the external accessory device to be completed because the computer system is unlocked. Providing improved security reduces the unauthorized performance of secure operations which, additionally, reduces power usage and improves battery life of the computer system by enabling the user to use the computer system more securely and efficiently. 
     In some embodiments, the one or more interactions include actuation (e.g.,  950   d ) of (e.g., via a pressing input/gesture) a hardware input element (e.g.,  792 ) (e.g., a physical button, a knob, a slider) (e.g., crown of watch, one or more physical buttons on the side, back, and/or front of the external accessory device) that is located on the external accessory device (e.g.,  790 ). In some embodiments, the one or more interactions include a rotational input directed to a hardware input element (e.g., as described above in relation to  FIGS.  9 A- 9 D ). Transitioning the computer system from the locked state to the unlocked state in accordance with a determination that one or more interactions that include a pressure gesture directed to a hardware input element that is located on the external accessory device have been detected provides the user with more control over the computer system by allowing a user to authenticate using a particular action. Providing the user with more control of the computer system enhances the operability of the computer system and makes the user-system interface more efficient (e.g., by helping the user to provide proper inputs and reducing user mistakes when operating/interacting with the computer system) which, additionally, reduces power usage and improves battery life of the system by enabling the user to use the computer system more quickly and efficiently. Transitioning the computer system from the locked state to the unlocked state in accordance with a determination that one or more interactions that include a pressure gesture directed to a hardware input element that is located on the external accessory device have been detected improves security by requiring a particular interaction with the external accessory device to be completed because the computer system is unlocked. Providing improved security reduces the unauthorized performance of secure operations which, additionally, reduces power usage and improves battery life of the computer system by enabling the user to use the computer system more securely and efficiently. 
     In some embodiments, the one or more interactions include a compressing gesture (e.g.,  1250   d ) (e.g., a squeezing gesture, a force-based gesture, or activation of a physical button) (e.g., a gesture that is detected to be above a threshold level of force) on (e.g., around a portion of, on a surface of) the external accessory device (e.g.,  790 ) (e.g., squeezing or pressing a portion of a set of headphones, ear buds, such as a pattern of squeezing a stem of an earbud or pressing a button of a pair of headphones (e.g., a single squeeze/press, a long squeeze/press, multiple squeezes and/or presses, any combination thereof, etc.). Transitioning the computer system from the locked state to the unlocked state in accordance with a determination that one or more interactions that include a force gesture on the external accessory device has been detected provides the user with more control over the computer system by allowing a user to authenticate using a particular action. Providing the user with more control of the computer system enhances the operability of the computer system and makes the user-system interface more efficient (e.g., by helping the user to provide proper inputs and reducing user mistakes when operating/interacting with the computer system) which, additionally, reduces power usage and improves battery life of the system by enabling the user to use the computer system more quickly and efficiently. Transitioning the computer system from the locked state to the unlocked state in accordance with a determination that one or more interactions that include a force gesture on the external accessory device has been detected improves security by requiring a particular interaction with the external accessory device to be completed because the computer system is unlocked. Providing improved security reduces the unauthorized performance of secure operations which, additionally, reduces power usage and improves battery life of the computer system by enabling the user to use the computer system more securely and efficiently. 
     In some embodiments, the one or more interactions include the computer system and the external accessory device transmitting data (e.g., connecting, communicating) via a near-field communication protocol (e.g., as described above in relation to  FIGS.  13 A- 13 F ). Transitioning the computer system from the locked state to the unlocked state in accordance with a determination that one or more interactions that include the computer system and the external accessory device transmitting data via a near-field communication protocol has been detected provides the user with more control over the computer system by allowing a user to authenticate using a particular action. Providing the user with more control of the computer system enhances the operability of the computer system and makes the user-system interface more efficient (e.g., by helping the user to provide proper inputs and reducing user mistakes when operating/interacting with the computer system) which, additionally, reduces power usage and improves battery life of the system by enabling the user to use the computer system more quickly and efficiently. Transitioning the computer system from the locked state to the unlocked state in accordance with a determination that one or more interactions that include the computer system and the external accessory device transmitting data via a near-field communication protocol has been detected improves security by requiring a particular interaction with the external accessory device to be completed because the computer system is unlocked. Providing improved security reduces the unauthorized performance of secure operations which, additionally, reduces power usage and improves battery life of the computer system by enabling the user to use the computer system more securely and efficiently. 
     In some embodiments, the one or more interactions include a first interaction (e.g.,  750   q ,  1350   c ) that is detected by the one or more input devices (e.g.,  702 ) of the computer system (e.g.,  700 ) (e.g., a gesture (e.g., double press gesture, rotating gesture) directed to (e.g., on) a hardware input element (e.g., a physical button, a knob, a slider), a gesture (e.g., a tap gesture) (and, in some embodiments, a non-tap gesture (e.g., a swipe gesture, a press-and-hold gesture) directed to the display generation component of the computer system) (e.g., an authorization gesture) and a second interaction (e.g.,  750   r ) detected at the external accessory device (and, in some embodiments, the second interaction is not detected at or on the computer system) (e.g., a force gesture on the external accessory device, a pressing gesture directed to a hardware input element of the external accessory device, near-field communication between the computer system and the external accessory device). In some embodiments, in accordance with a determination that the second interaction is detected before (or after) the first interaction is detected (and/or the second interaction is detected without the first interaction being detected), the computer system is not transitioned from being in the locked state to the unlocked state. In some embodiments, in accordance with a determination that the first interaction is detected before (e.g., within a predetermined period of time before (e.g., 1-60 seconds) (or after) the second interaction is detected), the computer system is transitioned from the locked state to the unlocked state. In some embodiments, in accordance with a determination that the first interaction and the second interaction are concurrently detected, the computer system is transitioned from being in the locked state to the unlocked state. In some embodiments, in accordance with a determination that the first interaction and the second interaction are not concurrently detected, the computer system is not transitioned from being in the locked state to the unlocked state. Transitioning the computer system from the locked state to the unlocked state in accordance with a determination that one or more interactions that include a first interaction that includes a gesture on the computer system and the second interaction on the external accessory device have been detected provides the user with more control over the computer system by allowing a user to authenticate using a particular action. Providing the user with more control of the computer system enhances the operability of the computer system and makes the user-system interface more efficient (e.g., by helping the user to provide proper inputs and reducing user mistakes when operating/interacting with the computer system) which, additionally, reduces power usage and improves battery life of the system by enabling the user to use the computer system more quickly and efficiently. Transitioning the computer system from the locked state to the unlocked state in accordance with a determination that one or more interactions that include a first interaction that includes a gesture on the computer system and the second interaction on the external accessory device have been detected improves security by requiring a particular interaction with the external accessory device to be completed because the computer system is unlocked. Providing improved security reduces the unauthorized performance of secure operations which, additionally, reduces power usage and improves battery life of the computer system by enabling the user to use the computer system more securely and efficiently. 
     In some embodiments, the one or more interactions is an interaction that is detected when a determination is made that the computer system (e.g.,  700 ) and the external accessory device (e.g.,  790 ) have physically touched (e.g., as described above in relation  FIGS.  11 A- 11 D ) (and/or are physically touching) (e.g., collided, have been tapped together, have been pushed together, etc.) (e.g., the computer system being tap physically by the external accessory device, or vice-versa). In some embodiments, the determination is made that the computer system and the external accessory device have physically touched based on accelerometer data (e.g., timed accelerometer data, accelerometer data that was detected within a threshold period of time (e.g., 10-60 seconds) after the request to unlock the computer system was received) and/or audio data detected by the computer system and/or the external accessory device (e.g., based on comparing accelerometer data and/or audio data detected by the computer system and the external accessory device, based on individually analyzing the accelerometer data and/or audio data detected by the computer system and the external accessory device). In some embodiments, the one or more interactions include voice input. Transitioning the computer system from the locked state to the unlocked state in accordance with a determination that one or more interactions that include an interaction that is detected when a determination is made that the computer system and the external accessory device have physically touched has been detected provides the user with more control over the computer system by allowing a user to authenticate using a particular action. Providing the user with more control of the computer system enhances the operability of the computer system and makes the user-system interface more efficient (e.g., by helping the user to provide proper inputs and reducing user mistakes when operating/interacting with the computer system) which, additionally, reduces power usage and improves battery life of the system by enabling the user to use the computer system more quickly and efficiently. Transitioning the computer system from the locked state to the unlocked state in accordance with a determination that one or more interactions that include an interaction that is detected when a determination is made that the computer system and the external accessory device have physically touched have been detected improves security by requiring a particular interaction with the external accessory device to be completed because the computer system is unlocked. Providing improved security reduces the unauthorized performance of secure operations which, additionally, reduces power usage and improves battery life of the computer system by enabling the user to use the computer system more securely and efficiently. 
     In some embodiments, the one or more interactions include a motion gesture (e.g.,  1050   d ) (e.g., one or more wrist raise gestures (e.g., lifting gestures), one or more wrist rotation gestures (e.g.,  1050   d ) (and, in some embodiments, detected via a gyroscope and/or accelerometer) (e.g., a sequence of motions gestures (e.g., lift wrist and rotate wrist left/right) that is performed with the external accessory device (e.g.,  790 ). In some embodiments, the one or more interactions include a particular sequence of interactions. In some embodiments, the prompt indicates the sequence of gestures that are required to be performed. Transitioning the computer system from the locked state to the unlocked state in accordance with a determination that one or more interactions that include a motion gesture that is performed with the external accessory device have been detected provides the user with more control over the computer system by allowing a user to authenticate using a particular action. Providing the user with more control of the computer system enhances the operability of the computer system and makes the user-system interface more efficient (e.g., by helping the user to provide proper inputs and reducing user mistakes when operating/interacting with the computer system) which, additionally, reduces power usage and improves battery life of the system by enabling the user to use the computer system more quickly and efficiently. Transitioning the computer system from the locked state to the unlocked state in accordance with a determination that one or more interactions that include a motion gesture that is performed with the external accessory device has been detected improves security by requiring a particular interaction with the external accessory device to be completed because the computer system is unlocked. Providing improved security reduces the unauthorized performance of secure operations which, additionally, reduces power usage and improves battery life of the computer system by enabling the user to use the computer system more securely and efficiently. 
     In some embodiments, in accordance with a determination that the second set of biometric identification criteria and the first set of biometric identification criteria are not satisfied, the computer system (e.g.,  700 ) maintains the computer system in the locked state without causing the output of the prompt (e.g., as described above in relation to  FIGS.  7 T- 7 V ). Maintaining the computer system in the locked state without causing the output of the prompt in accordance with a determination that the second set of biometric identification criteria and the first set of biometric identification criteria are not satisfied allows the computer system to limit unauthorized performance of secure operations, which provides improved security. Providing improved security reduces the unauthorized performance of secure operations which, additionally, reduces power usage and improves battery life of the computer system by enabling the user to use the computer system more securely and efficiently. 
     In some embodiments, in accordance with the determination that the one or more interactions with the external accessory device (e.g.,  790 ) have been detected, the computer system (e.g.,  700 ) transitioning from the locked state to the unlocked state includes: in accordance with a determination that the detected one or more interactions with the external accessory device (e.g.,  790 ) satisfy a set of respective criteria (e.g., the one or more match an enrolled profile of the interaction (e.g., a voice interaction that matches an enrolled voice above a first range (e.g., 95%) satisfies the set of respective criteria, a voice interaction that matches an enrolled voice interface between a second range (e.g., 70%-90%) does not satisfy the set of respective criteria (e.g., due to background noise), a connection via near-filed communication that is able to remain connected for at least a first predetermined threshold period of time (e.g., 5 seconds) satisfies the set of respective criteria, connection via near-filed communication that is able to remain connected for a second predetermined threshold period of time (e.g., 3 seconds) but not a first predetermined threshold period of time (e.g., 5 seconds) satisfies the set of respective criteria), the computer system provides (e.g., configuring the computer system to provide) limited access privileges to a user of the computer system (e.g., give user limited access (e.g., read-only access, no access to perform administrative operations and/or destructive operations (e.g., create operates, write operations, update operations, delete operations), no access to sensitive data and/or applications (e.g., and/or to certain data (e.g., passwords) and/or applications (e.g., password applications, payment applications, download application), and/or access to only a predetermined set of applications and/or operations, such as listening to music, web browsing, etc.) (e.g., in response to a request to access/perform one or more operations) (e.g., as described above in relation to  FIGS.  7 I- 7 O ). 
     In some embodiments, in accordance with the determination that the one or more interactions with the external accessory device have been detected and in accordance with a determination that the detected one or more interactions with the external accessory device do not satisfy the set of respective criteria, the computer system provides more than the limited access privileges (e.g., more privileges than the limited privileges) (and, in some embodiments, full access privileges) to a user of the computer system (e.g., gives a user more than limited access (e.g., ability to perform one or more administrative operations and/or destructive operations, one or more access to sensitive data and/or applications, ability to access more than the predetermined set of applications) (e.g., as described above in relation to  FIGS.  7 I- 7 O ). In some embodiments, in accordance with a determination that the second set of biometric identification criteria and the first set of biometric identification criteria are not satisfied, the computer system does not provide the limited access privileges to the user of the computer system (and/or provides no access privileges to a user of the computer system) and does not provide more than the limited access privileges to the user of the computer system (e.g., as described above in relation to  FIGS.  7 I- 7 O ). In some embodiments, in accordance with a determination that a first set of biometric identification criteria is satisfied and as a part of transitioning the computer system from the locked state to an unlocked state, the computer system provides more than the limited access privileges (and, in some embodiments, full access privileges) to a user of the computer system (e.g., and in some embodiments, more access privileges are provided in accordance with a determination that a first set of biometric identification criteria is satisfied than the number access privileges provides in accordance with the determination that the one or more interactions with the external accessory device have been detected and in accordance with a determination that the detected one or more interactions with the external accessory device do not satisfy the set of respective criteria (e.g., as described above in relation to  FIGS.  7 I- 7 O ). Providing limited access privileges to a user of the computer system in accordance with a determination that the detected one or more interactions with the external accessory device satisfy a set of respective criteria provides a way for the user to perform some activities without ways for the user to perform other activities. Providing improved security reduces the unauthorized performance of secure operations which, additionally, reduces power usage and improves battery life of the computer system by enabling the user to use the computer system more securely and efficiently. 
     Note that details of the processes described above with respect to method  1400  (e.g.,  FIGS.  14 A- 14 B ) are also applicable in an analogous manner to the methods described below. For example, method  1500  optionally includes one or more of the characteristics of the various methods described above with reference to method  1400 . For example, method  1400  can be combined with method  1500 , such that when partial biometric authentication is successful and full biometric authentication is unsuccessful at method  1400 , one or more steps of method  1500  can be used as an alternative authentication method to perform the secure operation (e.g., unlock the computer system). For brevity, these details are not repeated below. 
       FIGS.  15 A- 15 B  are a flow diagram illustrating a method for providing authentication at a computer system in accordance with some embodiments. Method  1500  is performed at a computer system (e.g.,  100 ,  300 ,  500 ,  700 ) (e.g., a smartphone, a tablet) that is in communication with (e.g., wirelessly or by wire; integrates or includes) one or more biometric sensors (e.g.,  704 ) (e.g., a fingerprint sensor, a facial recognition sensor (e.g., one or more depth sensors; one or more cameras (e.g., dual cameras, triple camera, quad cameras, etc.)) on the same side or different sides of the computer system (e.g., a front camera, a back camera)), an iris scanner) (e.g., is hidden or concealed) (and, in some embodiments, an external accessory device (e.g., an external peripheral device) (e.g., a computer system (e.g., a wearable device ((e.g., a smartwatch, headphones, glasses)), a device that is external to (e.g., not physically linked to or connected to) the computer system, a device that is in communication with the computer system via a communication channel, a device with a display generation component and one or more input devices) and one or more input devices (e.g.,  702 ,  710 ) (e.g., a touch-sensitive surface, an accelerometer, a hardware button) that include a voice input device (e.g., a microphone). Some operations in method  1500  are, optionally, combined, the orders of some operations are, optionally, changed, and some operations are, optionally, omitted. 
     As described below, method  1500  provides an intuitive way for providing authentication at a computer system. The method reduces the cognitive burden on a user for providing authentication at a computer system, thereby creating a more efficient human-machine interface. For battery-operated computing devices, enabling a user to provide authentication at a computer system faster and more efficiently conserves power and increases the time between battery charges. 
     The computer system receives ( 1502 ), via the one or more input devices (e.g.,  702 ,  710 ), a request (e.g.,  750   b ,  750   f ,  750   u ,  850   b ,  950   b ,  1050   b ,  1150   b ,  1250   b ,  1350   b ) to unlock the computer system while the computer system is in a locked state (e.g., as described above in relation to method  1400  of CSI (e.g., step  1402 )). 
     In response to ( 1504 ) receiving the request (e.g.,  750   b ,  750   f ,  750   u ,  850   b ,  950   b ,  1050   b ,  1150   b ,  1250   b ,  1350   b ) to unlock the computer system: in accordance with a determination that a first set of biometric identification criteria is satisfied (e.g., a set of criteria that is satisfied when the first portion of biometric feature is available to be captured and the biometric data (e.g., that includes data corresponding to the first portion of the biometric feature) satisfies a set of biometric authentication criteria (e.g., a set of criteria that includes a criterion that is satisfied when the biometric data that includes a first portion of biometric feature and a second portion of biometric feature sufficiently matches an authorized biometric profile)), wherein the first set of biometric identification criteria is satisfied when a detected biometric feature detected in conjunction with (e.g., in response to, detected with a predetermined time (e.g., 1-10 seconds) before/after the request is received) the request to unlock the computer system is consistent with (e.g., is determined to match and/or is determined to sufficiently match (e.g., within a confidence threshold level of 90-100%)) an enrolled biometric feature, the computer system (e.g.,  700 ) transitions ( 1506 ) the computer system from the locked state (e.g., as indicated by  712   a ) to an unlocked state (e.g., as indicated by  712   b ) (e.g., without outputting a prompt that indicates that one or more interactions with the external accessory device can be used to unlock the computer system) (e.g., as described above in relation to  FIGS.  7 E- 7 H ,  FIGS.  8 A- 8 D ,  FIGS.  9 A- 9 D ,  FIGS.  10 A- 10 D ,  FIGS.  11 A- 11 D ,  FIGS.  12 A- 12 D ,  FIGS.  13 A- 13 F ). 
     In response to ( 1504 ) receiving the request (e.g.,  750   b ,  750   f ,  750   u ,  850   b ,  950   b ,  1050   b ,  1150   b ,  1250   b ,  1350   b ) to unlock the computer system: in accordance with a determination that a second set of biometric identification criteria is satisfied (e.g., a set of criteria that is satisfied when a first portion of a biometric feature is not available to be captured and the biometric data (e.g., that does not include data corresponding to the first portion of the biometric feature) satisfies a set of biometric authentication criteria (e.g., a set of criteria that includes a criterion that is satisfied when the biometric data that includes data corresponding to a second portion of biometric feature but does not include data corresponding to the first portion of the biometric data that matches (e.g., sufficiently matches (e.g., within a certain confidence threshold (e.g., above 90%) an authorized biometric profile)) without satisfying the first set of biometric identification criteria, wherein the second set of biometric identification criteria is satisfied when the detected biometric feature detected in conjunction with (e.g., in response to, detected with a predetermined time (e.g., 1-10 seconds) before/after the request is received) the request to unlock the computer system is partially consistent (e.g., at least a portion of the detected biometric feature is determined to match and/or is determined to sufficiently match (e.g., within a confidence threshold level of 90-100%)) with an enrolled biometric feature, the computer system causes ( 1508 ) an output (e.g., the computer system and/or another computer system to output) of a prompt (e.g.,  844 ) (e.g., a visual, haptic, audio prompt) that indicates that voice input is required (and, in some embodiments, are required) to unlock the computer system (e.g., to perform the secure operation) (e.g., as described above in relation to  FIGS.  7 E- 7 H ,  FIGS.  8 A- 8 D ,  FIGS.  9 A- 9 D ,  FIGS.  10 A- 10 D ,  FIGS.  11 A- 11 D ,  FIGS.  12 A- 12 D ,  FIGS.  13 A- 13 F ). In some embodiments, in response to receiving the request to unlock the computer system and in accordance with a determination that a set of partial biometric identification criteria are satisfied, the computer system is maintained in the locked state. 
     After causing the output of the prompt (e.g.,  844 ), the computer system (e.g.,  700 ) receives ( 1510 ), via the voice input device, an indication that voice input has been detected. In some embodiments, as a part of receiving an indication that voice input has been detected, the computer detects voice input via one or more microphones that are in communication with and/or included in the computer system. In some embodiments, as a part of receiving the indication that voice input is detected, the computer system receives an indication of whether the detected voice input satisfies the voice profile for the user profile associated with the computer system (e.g., as described above in relation to  FIGS.  8 A- 8 D ). 
     In response to ( 1512 ) receiving the indication that voice input (e.g.,  850   d ) has been detected (e.g., detected within a predetermined time) (and while the computer is in the locked state and the respective criteria continue to be met): in accordance with a determination that the detected voice input (e.g.,  850   d ) matches an authorized voice profile (e.g., matches a voice profile for a user associated with the computer system (e.g.,  700 ) (e.g., a voice profile that is corresponds and/or belongs to with a user profile that is) associated with (e.g., associated with a user profile that is stored on, corresponding to, a user profile that is configured to control the computer system)), the computer system (e.g.,  700 ) transitions ( 1514 ) the computer system from the locked state (e.g., as indicated by  712   a ) to the unlocked state (e.g., as indicated by  712   b ) (e.g., performing the secure operation) (e.g., as described above in relation to  FIGS.  8 A- 8 D ); and in accordance with a determination that the detected voice input (e.g.,  850   d ) does not match the authorized voice profile, the computer system maintains ( 1416 ) the computer system in the locked state (e.g., forgoing performing the secure operation) (e.g., as described above in relation to  FIGS.  8 A- 8 D ). Choosing whether or not to transition the computer system from the locked state to the unlocked state based on whether one or more interactions with the external accessory device have been detected (e.g., after a determination is made that a partial set of biometric identification criteria is satisfied) allows the computer system to limit unauthorized performance of unlocking the computer system while providing an additional way to authorize the unlocking of the computer system and improves security because the user is more likely to keep the security features enabled if they are less disruptive to use of the computer system. Providing improved security reduces the unauthorized performance of secure operations which, additionally, reduces power usage and improves battery life of the computer system by enabling the user to use the computer system more securely and efficiently. Causing an output of a prompt indicating that one or more interactions with the external accessory device can be used to unlock the computer system provides the user with feedback about the current state of the authentication process and informs the user of an action that is needed to complete the authentication process and automatically surfaces a relevant function to improve the user-machine interface. Providing improved user feedback and automatically surfaces a relevant function to improve the user-machine interface enhances the operability of the computer system and makes the user-system interface more efficient (e.g., by helping the user to provide proper inputs and reducing user mistakes when operating/interacting with the computer system) which, additionally, reduces power usage and improves battery life of the system by enabling the user to use the computer system more quickly and efficiently. Transitioning the computer system from the locked state to the unlocked state in accordance with a determination that the physical biometric feature of the user satisfies the first set of biometric authentication criteria allows the computer system to limit unauthorized performance of unlocking the computer system while providing an additional way to authorize the unlocking of the computer system and improves security because the user is more likely to keep the security features enabled if they are less disruptive to use of the computer system. Providing improved security reduces the unauthorized performance of secure operations which, additionally, reduces power usage and improves battery life of the computer system by enabling the user to use the computer system more securely and efficiently. 
     In some embodiments, the one or more biometric sensors include one or more microphones and the voice input (e.g.,  850   d ) is received when the voice input is detected via the one or more microphones (e.g., as described above in relation to  FIGS.  8 A- 8 D ). 
     In some embodiments, in response to ( 1504 ) receiving the request (e.g.,  750   b ,  750   f ,  750   u ,  850   b ,  950   b ,  1050   b ,  1150   b ,  1250   b ,  1350   b ) to unlock the computer system: in accordance with a determination that the second set of biometric identification criteria and the first set of biometric identification criteria are not satisfied, the computer system maintains the computer system in the locked state without causing the output of the prompt (e.g., as described above in relation to method  1400  and/or  FIGS.  7 T- 7 V  and  FIGS.  8 A- 8 D ). Maintaining the computer system in the locked state without causing the output of the prompt in accordance with a determination that the set of partial biometric identification criteria and the first set of biometric identification criteria are not satisfied allows the computer system to limit unauthorized performance of secure operations, which provides improved security. Providing improved security reduces the unauthorized performance of secure operations which, additionally, reduces power usage and improves battery life of the computer system by enabling the user to use the computer system more securely and efficiently. 
     In some embodiments, the prompt (e.g.,  844 ) includes an instruction to recite a predefined set of words (and/or other utterances) (e.g., as described above in relation to  FIGS.  8 A- 8 D ). In some embodiments, the predefined set of words can be determined by the computer system. In some embodiments, the predefined set of words are the same predefined set of words. In some embodiments, the predefined set of words changes based one or more criteria (e.g., time of day, environmental conditions, randomness, etc.). Having a prompt that includes an instruction to recite the predefined set of words provides the user with feedback about the current state of the authentication process at the computer system and informs the user of an action that is needed to complete the authentication process and automatically surfaces a relevant function to improve the user-machine interface. Providing improved user feedback and automatically surfaces a relevant function to improve the user-machine interface enhances the operability of the computer system and makes the user-system interface more efficient (e.g., by helping the user to provide proper inputs and reducing user mistakes when operating/interacting with the computer system) which, additionally, reduces power usage and improves battery life of the system by enabling the user to use the computer system more quickly and efficiently. 
     In some embodiments, the second set of biometric identification criteria includes a criterion that is satisfied when a gaze of a user directed toward a predetermined portion of the computer system (e.g., the display, a particular portion (e.g., an upper portion) of the user interface, etc.) has been detected (e.g., as described above in relation to method  1400  and/or  FIGS.  7 T- 7 V  and  FIGS.  8 A- 8 D ) (e.g., via the one or more biometric sensors (e.g., one or more cameras)) (e.g., for a predetermined period of time (e.g., 1-3 seconds)) (e.g., after the request to unlock the computer system was received) (e.g., a gaze of a user looking in the direction of the computer system) (e.g., using one or more techniques as discussed above in relation to method  1400  and/or  FIGS.  7 E- 7 G ). Causing the output of the prompt indicating that one or more interactions with the external accessory device can be used to unlock the computer system when the gaze of a user has been detected for a predetermined time automatically limits the display of the prompt, so relevant information is surface when a determination is made that the user is intended to complete biometric identification, which provides improved security. Providing improved user feedback and automatically surfaces a relevant function to improve the user-machine interface enhances the operability of the computer system and makes the user-system interface more efficient (e.g., by helping the user to provide proper inputs and reducing user mistakes when operating/interacting with the computer system) which, additionally, reduces power usage and improves battery life of the system by enabling the user to use the computer system more quickly and efficiently. 
     In some embodiments in accordance with a determination that the detected voice input (e.g.,  850 ) does not match the authorized voice profile (e.g., using one or more techniques as described above in relation to  FIGS.  8 A- 8 D ), the computer system provides limited access privileges to a second user (e.g., the first user) of the computer system (e.g., using one or more techniques as described above in relation to method  1400  and/or  FIGS.  7 I- 7 O ). In some embodiments, in accordance with a determination that the detected voice input does match an authorized voice profile, the computer system provides more than the limited access privileges (e.g., more privileges than the limited privileges) (and, in some embodiments, full access privileges) to a user of the computer system (e.g., gives a user more than limited access (e.g., ability to perform one or more administrative operations and/or destructive operations, one or more access to sensitive data and/or applications, ability to access more than the predetermined set of applications) (e.g., using one or more techniques as described above in relation to method  1400  and/or  FIGS.  7 I- 7 O ). In some embodiments, in accordance with a determination that the partial set of biometric identification criteria and the full set of biometric identification criteria are not satisfied, the computer system does not provide the limited access privileges to the user of the computer system (and/or provides no access privileges to a user of computer system) and does not provide more than the limited access privileges to the user of the computer system (e.g., using one or more techniques as described above in relation to method  1400  and/or  FIGS.  7 I- 7 O ). In some embodiments, in accordance with a determination that a full set of biometric identification criteria is satisfied and as a part of transitioning the computer system from the locked state to an unlocked state, the computer system provides more than the limited access privileges (and, in some embodiments, full access privileges) to a user of the computer system (e.g., and in some embodiments, one or more access privileges are provided in accordance with a determination that a full set of biometric identification criteria is satisfied than the number access privileges provides in accordance with a determination that the detected voice input does not match an authorized voice profile) (e.g., using one or more techniques as described above in relation to method  1400  and/or  FIGS.  7 I- 7 O ). Providing limited access privileges to a user of the computer system in accordance with a determination that the detected voice input does not match an authorized voice profile provides a way for the user to perform some activities without ways for the user to perform other activities. Providing improved security reduces the unauthorized performance of secure operations which, additionally, reduces power usage and improves battery life of the computer system by enabling the user to use the computer system more securely and efficiently. 
     Note that details of the processes described above with respect to method  1500  (e.g.,  FIGS.  15 A- 15 B ) are also applicable in an analogous manner to the methods described above. For example, method  1400  optionally includes one or more of the characteristics of the various methods described above with reference to method  1500 . For example, method  1500  can be combined with method  1400 , such that when partial biometric authentication is successful and full biometric authentication is unsuccessful at method  1500 , one or more steps of method  1400  can be used as an alternative authentication method to perform the secure operation (e.g., unlock the computer system). For brevity, these details are not repeated below. 
     The foregoing description, for purpose of explanation, has been described with reference to specific embodiments. However, the illustrative discussions above are not intended to be exhaustive or to limit the invention to the precise forms disclosed. Many modifications and variations are possible in view of the above teachings. The embodiments were chosen and described in order to best explain the principles of the techniques and their practical applications. Others skilled in the art are thereby enabled to best utilize the techniques and various embodiments with various modifications as are suited to the particular use contemplated. 
     Although the disclosure and examples have been fully described with reference to the accompanying drawings, it is to be noted that various changes and modifications will become apparent to those skilled in the art. Such changes and modifications are to be understood as being included within the scope of the disclosure and examples as defined by the claims. 
     One aspect of the present technology is the gathering and use of data available from various sources to improve the ability of the computer system to biometrically authenticate the user in order to authorize the performance of secure operations that are initiated at the computer system. The present disclosure contemplates that in some instances, this gathered data may include personal information data that uniquely identifies or can be used to contact or locate a specific person. Such personal information data can include demographic data, location-based data, telephone numbers, email addresses, twitter IDs, home addresses, data or records relating to a user&#39;s health or level of fitness (e.g., vital signs measurements, medication information, exercise information), date of birth, or any other identifying or personal information. 
     The present disclosure recognizes that the use of such personal information data, in the present technology, can be used to the benefit of users. For example, the personal information data can be used to improve the ability of the computer system to biometrically authenticate the user. Accordingly, use of such personal information data enables users to have calculated control over the biometric data that the user has shared with the computer system. Further, other uses for personal information data that benefit the user are also contemplated by the present disclosure. For instance, health and fitness data may be used to provide insights into a user&#39;s general wellness, or may be used as positive feedback to individuals using technology to pursue wellness goals. 
     The present disclosure contemplates that the entities responsible for the collection, analysis, disclosure, transfer, storage, or other use of such personal information data will comply with well-established privacy policies and/or privacy practices. In particular, such entities should implement and consistently use privacy policies and practices that are generally recognized as meeting or exceeding industry or governmental requirements for maintaining personal information data private and secure. Such policies should be easily accessible by users, and should be updated as the collection and/or use of data changes. Personal information from users should be collected for legitimate and reasonable uses of the entity and not shared or sold outside of those legitimate uses. Further, such collection/sharing should occur after receiving the informed consent of the users. Additionally, such entities should consider taking any needed steps for safeguarding and securing access to such personal information data and ensuring that others with access to the personal information data adhere to their privacy policies and procedures. Further, such entities can subject themselves to evaluation by third parties to certify their adherence to widely accepted privacy policies and practices. In addition, policies and practices should be adapted for the particular types of personal information data being collected and/or accessed and adapted to applicable laws and standards, including jurisdiction-specific considerations. For instance, in the US, collection of or access to certain health data may be governed by federal and/or state laws, such as the Health Insurance Portability and Accountability Act (HIPAA); whereas health data in other countries may be subject to other regulations and policies and should be handled accordingly. Hence different privacy practices should be maintained for different personal data types in each country. 
     Despite the foregoing, the present disclosure also contemplates embodiments in which users selectively block the use of, or access to, personal information data. That is, the present disclosure contemplates that hardware and/or software elements can be provided to prevent or block access to such personal information data. For example, in the case of biometric authentication, the present technology can be configured to allow users to select to “opt in” or “opt out” of participation in the collection of personal information data during registration for services or anytime thereafter. In another example, users can select not to provide biometric data for use in biometric authentication. In yet another example, users can select to limit the type of biometric data that is provided for biometric authentication and/or limit and/or entirely limit the computer system&#39;s use of biometric authentication using the biometric data from the user. In addition to providing “opt in” and “opt out” options, the present disclosure contemplates providing notifications relating to the access or use of personal information. For instance, a user may be notified upon downloading an app that their personal information data will be accessed and then reminded again just before personal information data is accessed by the app. 
     Moreover, it is the intent of the present disclosure that personal information data should be managed and handled in a way to minimize risks of unintentional or unauthorized access or use. Risk can be minimized by limiting the collection of data and deleting data once it is no longer needed. In addition, and when applicable, including in certain health related applications, data de-identification can be used to protect a user&#39;s privacy. De-identification may be facilitated, when appropriate, by removing specific identifiers (e.g., date of birth, etc.), controlling the amount or specificity of data stored (e.g., collecting location data a city level rather than at an address level), controlling how data is stored (e.g., aggregating data across users), and/or other methods.

Metadata:
Filing Date: 20220428
Publication Date: 20250204
Grant Date: 20250204
Priority Date: 20210510
Inventors: LEE, SUNG CHANG
CHENG, BOWEN
HANG, Yue
PAN, WEIQI
SHEN, YUE
YANG, XIAOGUANG
YU, XIAOFENG
ZHANG, FENG
ZHAO, LIANG
ZHAO, QIUJI
ZHONG, Wendong
Assignee: APPLE INC
CPC Classifications: [{"code": "G06F21/32", "inventive": true, "first": false, "tree": "[]"}, {"code": "G06F2221/2117", "inventive": false, "first": false, "tree": "[]"}, {"code": "G06F2221/2117", "inventive": false, "first": false, "tree": "[]"}, {"code": "G06F21/34", "inventive": true, "first": false, "tree": "[]"}, {"code": "G06F21/34", "inventive": true, "first": true, "tree": "[]"}, {"code": "G06F21/32", "inventive": true, "first": true, "tree": "[]"}, {"code": "G06F2221/2117", "inventive": false, "first": false, "tree": "[]"}, {"code": "G06F21/32", "inventive": true, "first": false, "tree": "[]"}, {"code": "G06F21/34", "inventive": true, "first": true, "tree": "[]"}]
Family ID: 84890552