Patent ID: 8601570

Claim:
One or more non-transitory computer readable media having computer readable instructions stored thereon for authenticating a user of a computing device, the computing device having a memory storing a base image and an overlay image, the base image having a particular base image reference point, and the overlay image having a particular overlay image reference point, the instructions comprising: generating a modified base image; generating a modified overlay image; displaying, on a display, the modified base image overlaid by the modified overlay image; receiving an input for moving one of the modified base image and the modified overlay image; moving the one of the modified base image and the modified overlay image in response to the input; receiving a further input to change an orientation of the modified base image or the modified overlay image; 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 display and the orientation of the modified base image or the modified overlay image matching a particular orientation criterion, indicating positive authentication.