Patent ID: 8594374

Claim:
A method of providing access to an electronic device, comprising: displaying an unlock element on a display element of the electronic device; moving the unlock element along a determined path on the display element, wherein the determined path corresponds to a line without right angles; capturing image information using at least one image capture element of the electronic device; analyzing, using a processor of the electronic device, the image information to determine a change in gaze direction of a user with respect to the electronic device; analyzing the image information to locate information representative of at least one of the user's eyes; providing the user with access to at least some functionality of the electronic device when the change in gaze direction of the user substantially tracks the determined path during movement of the unlock element and the information representative of at least one of the user's eyes matches information stored for an authorized user; and using information about the change in gaze direction during movement of the unlock element to determine calibration information useful in performing gaze tracking for the user by the electronic device, wherein the calibration information is determined within an allowable time period from when the change in the gaze direction of the user substantially tracks the determined path during movement of the unlock element, wherein the user is able to obtain secure access to at least some functionality of the electronic device and calibrate gaze tracking of the electronic device during a gaze-based device unlock procedure.