A system for interfacing between a user and a computer includes a microvideo display monitor, which may be mounted in a position which is substantially fixed relative to a given eye of the user, and a video input device which obtains an image of the given eye. The video input device is maintained...http://www.google.es/patents/US5751260?utm_source=gb-gplus-sharePatente US5751260 - Sensory integrated data interface
