What is it?
Head tracking and head-controlled access use movements of the head to control a pointer or interact with a digital device. A built-in or external camera may track head movement and translate it into cursor movement, while specialized head-controlled devices may use sensors or other technology. Selection can be made through dwell, switches, facial gestures, or another activation method.
How to use it?
Position the device or camera so head movements can be detected reliably while the learner maintains a comfortable posture. Adjust pointer sensitivity, movement range, dwell settings, and other controls so the amount of movement required is manageable. Practice during meaningful activities and monitor accuracy, efficiency, and fatigue over time. Head tracking can also be combined with switches, on-screen keyboards, or other access tools when a separate selection method is helpful.
Why use it?
Head-controlled access can provide an alternative for learners who have reliable head movement but difficulty using a touchscreen, mouse, or keyboard with their hands. It can reduce dependence on physical assistance and provide access to writing, communication, navigation, learning activities, and recreation. Customizable settings allow the access method to be matched to an individual's movement patterns and abilities.
