TECHNIQUES FOR SECURELY UNLOCKING A TOUCH SCREEN USER DEVICE

摘要

Techniques are provided for detecting a sequence of contact or interaction instances initiated by a user on a surface of an interface unit of a user device. Each contact instance comprises one or more points of contact between the user and the surface of the interface unit, while each interaction instance comprises one or more points of activation with respect to the surface of the interface unit. The sequence of contact instances or interaction instances initiated by the user is then compared to stored information to determine whether the sequence of contact instances or interaction instances matches the stored information. If the sequence of contact instances or interaction instances matches the stored information, access is granted to the user device or to a device or system associated with the user device.