Methods for testing the operation of an aircraft braking system utilize the steps of applying a predetermined electrical energy level to an electromechanical actuator attached to a brake assembly, followed by discontinuing electrical energy to the electromechanical actuator. The right side near-infrared light source is positioned on a right side relative to the camera in a driver’s view, and a light axis of the right side near-infrared light source is tilted to the right by 15 to 45 degrees relative to an imaging direction of the camera. If the product is deemed to be authentic, an indication of the authentication is provided on the product and a certificate of authentication is provided. In one application, the update function describes how the position, shape andor size of a region of interest in an image changes or is expected to change.