The Tobii REX is a new eye tracking peripheral for the computer that was shown at CES. It works by following the the direction that the user’s eyes are gazing and moves the mouse cursor accordingly. And it works pretty well, as you can see in the video below. It could be a great tool for people that have very limited use of the rest of their body, such as those with ALS. And the fact that they’re aiming to sell it to general computer users will help bring the price down. It seems limited in that it requires a second input device such as a keyboard for things like mouse clicks but I imagine that if it can accurately track eye gaze then programming it to track blinks for things like click events shouldn’t be far off.