Mobile gaze input system for pervasive interaction

A mobile gaze-tracking system is provided. The user operates the system by looking at the gaze tracking unit and at pre-defined regions at the fringe of the tracking unit. The gaze tracking unit may be placed on a smartwatch, a wristband, or woven into a sleeve of a garment. The unit provides feedback to the user in response to the received command input. The unit provides feedback to the user on how to position the mobile unit in front of his eyes. The gaze tracking unit interacts with one or more controlled devices via wireless or wired communications. Example devices include a lock, a thermostat, a light or a TV. The connection between the gaze tracking unit may be temporary or longer-lasting. The gaze tracking unit may detect features of the eye that provide information about the identity of the user.