Head Control

An alternative computer input device that translates head movements into cursor movements on screen, enabling people who cannot use their hands or arms to operate a computer. Head control systems typically use ultrasonic sensors, infrared tracking, or camera-based systems to detect head position and orientation. The user moves the cursor by turning, tilting, or nodding their head, and selections are made through dwell time (holding the cursor on a target), external switches, or other activation methods. Head controls are commonly prescribed for people with spinal cord injuries, muscular dystrophy, cerebral palsy, and other conditions that affect upper limb function. The effectiveness of head controls depends on the user's neck range of motion, head control stability, and endurance.