Head-based Pointing

An alternative input method that allows users to control an on-screen cursor by moving their head, typically tracked via a camera, infrared sensor, or inertial measurement unit. Head-based pointing is particularly valuable for people with motor impairments who cannot use standard input devices like a mouse, keyboard, or touchscreen, but who retain voluntary head control. Modern implementations use the front-facing cameras on smartphones and computers with machine learning-based face detection to track head position without requiring specialized hardware. Selection actions (clicking) are typically performed through dwell time, blink detection, smile detection, or external switches.