Likewise disabled persons may find hands-free computing important in their everyday lives.
[1] This can range from using the tongue, lips, mouth, or movement of the head to voice activated interfaces utilizing speech recognition software and a microphone or bluetooth technology.
Examples of available hands-free computing devices include mouth-operated joystick types such as the TetraMouse, the QuadJoy, the Jouse2, the QuadStick, and the IntegraMouse, camera based head tracking systems such as SmartNav, Tracker Pro, FreeTrack, HeadMouse Extreme, HeadMaster, KinesicMouse[2] and Smyle Mouse,[3] and speech recognition specialized for disabilities such as Voice Finger.
Camera types are sensitive to ambient lighting and the mouse pointer may drift and inaccuracies result from head movements not intended to be mouse movements.
Speech recognition specialized for disabilities and hands-free computing focus more on low-level control of the keyboard and mouse than on usual areas like dictation.