A method comprising: at an electronic device having a display and a camera: displaying, on the display, a user interface that includes a representation of content; while displaying the user interface that includes the representation of content, receiving first user input on the electronic device corresponding to a request for performing a predefined action on the content; in response to receiving the first user input: in accordance with a determination, based on captured image data captured by the camera, that a set of authorization criteria is met, wherein the authorization criteria include a criterion that is met when the captured image data indicates that the face of an authorized user was present in front of the camera and was looking at the display at the time that the user input was received, performing the predefined action; and in accordance with a determination, based on the captured image data, that the set of authorization criteria is not met because the captured image data indicates that the face of an authorized user was present in front of the camera and was not looking at the display, forgoing performance of the predefined action and displaying a confirmation interface displaying a user-interactive graphical user interface object that, when selected, causes the electronic device to perform the predefined action. displaying, on the display, a user interface that includes a representation of content; while displaying the user interface that includes the representation of content, receiving first user input on the electronic device corresponding to a request for performing a predefined action on the content; in response to receiving the first user input: in accordance with a determination, based on captured image data captured by the camera, that a set of authorization criteria is met, wherein the authorization criteria include a criterion that is met when the captured image data indicates that the face of an authorized user was present in front of the camera and was looking at the display at the time that the user input was received, performing the predefined action; and in accordance with a determination, based on the captured image data, that the set of authorization criteria is not met because the captured image data indicates that the face of an authorized user was present in front of the camera and was not looking at the display, forgoing performance of the predefined action and displaying a confirmation interface displaying a user-interactive graphical user interface object that, when selected, causes the electronic device to perform the predefined action. in accordance with a determination, based on captured image data captured by the camera, that a set of authorization criteria is met, wherein the authorization criteria include a criterion that is met when the captured image data indicates that the face of an authorized user was present in front of the camera and was looking at the display at the time that the user input was received, performing the predefined action; and in accordance with a determination, based on the captured image data, that the set of authorization criteria is not met because the captured image data indicates that the face of an authorized user was present in front of the camera and was not looking at the display, forgoing performance of the predefined action and displaying a confirmation interface displaying a user-interactive graphical user interface object that, when selected, causes the electronic device to perform the predefined action.