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"Tobii's eye-tracking technology can make using a PC slightly more "natural," reading your eye movements to, say, scroll without needing to move a mouse. But for the disabled, it can be revelatory, allowing people with disabilities to use virtually all the abilities of a computer without ever touching it. The Tobii EyeMobile brings complete eye control to Windows tablets. It's an oblong-shaped sensor called the PCEye Go that attaches underneath the tablet via a bracket. Once it's in place and the eye-tracking software is installed, all the user needs to do is calibrate the sensor (which takes about a minute) and it's eyeball-ready."

Interesting piece by Danah Boyd challenging the belief that we should track our children and wall their digital wall.