Alternative input device

Any input method that replaces or supplements standard keyboard, mouse, or joystick interfaces to enable people with motor impairments to operate computers, wheelchairs, and other technology. Examples include sip-and-puff controllers, eye-tracking systems, head switches, voice control, centre-of-gravity sensing seats, and single-switch scanning interfaces. Selecting the appropriate alternative input device depends on the user's specific motor abilities, fatigue levels, and the demands of the task, making personalisation essential.