Patent Document ID: 20120291120
Application ID: 13103199
Patent Status: 0

Claim One:
1. One or more computer readable media having computer readable instructions stored thereon that when executed by a processor implement a method of user authentication of a computing device, the computing device having a memory storing a base image and an overlay image, the base image having a pre-selected base image reference point, and the overlay image having a pre-selected overlay image reference point, the method comprising: generating a modified base image; generating a modified overlay image; displaying, on a touchscreen, the modified base image overlaid by the modified overlay image; receiving an input, the input starting outside a display area of the touchscreen; moving the one of the modified base image and the modified overlay image in response to receiving the input; and in response to alignment of the base image reference point on the modified base image with the overlay image reference point on the modified overlay image at a point on the touchscreen after the moving, indicating positive authentication.