A microprocessor controlled infrared-light based system that indicates eye and head position in real-time, so as to enable a computer user to control cursor movement on a computer display by moving his or her eyes or head. By activating the system using a designated key on a standard keyboard or by using...http://www.google.fr/patents/US5367315?utm_source=gb-gplus-shareBrevet US5367315 - Method and apparatus for controlling cursor movement
Method and apparatus for controlling cursor movement
