Adjusting the position of an endpoint reference for increasing security during device log-on

A method of 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, the method 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, wherein displaying includes varying at least one of a position of the base image reference point on the display and a position of the overlay image reference point on the display relative to a previous displaying of the base image and the overlay image;
• receiving an input causing 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
• in response to the alignment, indicating positive authentication.

A computing device comprising:

• a processor;
• a display;
• a user interface for receiving user input;
• and
• one or more non-transitory computer readable media having computer readable instructions stored thereon for authenticating a user of the 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 the processor direct the computing device to generate a modified base image;
• generate a modified overlay image;
• display, on the display, the modified base image overlaid by the modified overlay image, wherein including varying at least one of a position of the base image reference point on the display and a position of the overlay image reference point on the display relative to a previous display of the base image and the overlay image;
• receive an input causing 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 in response to the alignment, indicate positive authentication.