Another alternative to the mouse as a pointing device is to use a gaze-tracking camera, which works out where you are looking and moves an on-screen pointer accordingly.

ECONOMIST: Computer interfaces

STOCKHOLM--(BUSINESS WIRE)--Tobii Technology, the global leader in eye tracking and gaze interaction, today announced that partner NTT DOCOMO INC.

ENGADGET: Tobii, Fujitsu and NTT DoCoMo partner on eye tracking ibeam tablet, promise a peek in October

Tobii works extensively with many application partners in the consumer electronics industry as it works to bring eye tracking and gaze interaction to personal computers, gaming systems, televisions and vehicles.

ENGADGET: Tobii, Fujitsu and NTT DoCoMo partner on eye tracking ibeam tablet, promise a peek in October

With its full head and motion tracking support, the technology is a milestone for real-time gaze interaction with virtual avatars or 3D gaming applications.

ENGADGET: SMI Eye-Tracking 3D Glasses use rim-based cameras to adjust perspective