Facial recognition

A computer-readable storage device encoded with instructions that, when executed, cause one or more processors of a computing device to perform operations comprising:

• receiving a first authentication image;
• outputting a prompt to perform a predetermined liveness gesture;
• receiving a second authentication image;
• detecting a liveness gesture based on at least one of a yaw angle of the second authentication image relative to the first authentication image and a pitch angle of the second authentication image relative to the first authentication image, wherein the yaw angle corresponds to a transition centered around a vertical axis, and wherein the pitch angle corresponds to a transition centered around a horizontal axis;
• determining whether the detected liveness gesture matches the predetermined liveness gesture;
• determining, based on whether the detected liveness gesture matches the predetermined liveness gesture, whether to deny authentication with respect to accessing one or more functionalities controlled by the computing device.

A device comprising:

• a memory;
• and
• one or more programmable processors configured to:
• receive a first authentication image;
• output a prompt to perform a predetermined liveness gesture;
• receive a second authentication image;
• detect a liveness gesture based on at least one of a yaw angle of the second authentication image relative to the first authentication image and a pitch angle of the second authentication image relative to the first authentication image, wherein the yaw angle corresponds to a transition centered around a vertical axis, and wherein the pitch angle corresponds to a transition centered around a horizontal axis;
• determine whether the detected liveness gesture matches the predetermined liveness gesture;
• and
• determine, based on whether the detected liveness gesture matches the predetermined liveness gesture, whether to deny authentication with respect to accessing one or more functionalities controlled by the device.