Foot-Based Interaction

An interaction technique that uses foot movements and gestures as input for controlling digital devices. Foot-based interaction is particularly relevant for people with upper body motor impairments who have functional lower limbs but cannot use their hands, including people with bilateral arm amputation, cerebral palsy, or severe upper body paralysis. Approaches range from direct touchscreen contact with toes (which is tiring and error-prone) to camera-based gesture recognition systems that track foot movements without physical contact. Research has identified that whole-foot gestures like rotations, flexions, and taps are more comfortable and detectable than fine toes-based gestures, which are both uncomfortable for users and difficult for computer vision algorithms to detect.