*Check that out, a Windows 8 pad no less.
Published on Jun 15, 2012 by TheEyeTribe
"The Eye Tribe software (formerly known as Senseye) allows users to interact with their mobile device using their eye movements. The add-on uses a simple webcam and a set of infrared LEDs, all connected to the USB port of the tablet. Our software records the eyes and calculates the point of the screen where the user is looking. "
More info:
http://www.theeyetribe.com
http://youtu.be/lVCpUmLinXM
