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We knew this would turn up sooner or later, but it took a big research budget at IBM to make it a reality. Ah Big Blue, what will you think of next? The Head Tracking Pointer is a cheap and simple mouse replacement that allows a person to point and click by simply tilting his or her head in different directions. All you need is custom software and a webcam, and you're good to go with this baby. Just be sure you don't get swallowed up by those crafty rectangles competing for screen space.

Project Page [IBM]