Patent ID: 8635676

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 base image reference point, and the overlay image having an overlay image reference point, which when executed by a processor direct the computing device to: generate a modified base image; generate a modified overlay image; display, on a display, the modified base image overlaid by the modified overlay image; receive an input for moving one of the modified base image and the modified overlay image; move the one of the modified base image and the modified overlay image if a criterion for movement of the one of the modified base image and the modified overlay image is met, the criterion for movement being that the input is a touch at a location other than the overlay image reference point; 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 after the move, indicate positive authentication.