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Summer 2003, Mike Sinclair made an infrared laser pointer for me and I made an infrared camera using a deep red filter and a Creative webcam. After some tracking and geometric mapping, I build a remote controller using the laser point. I showed the demo to Bill Gates in MS science fair 2003.
Granted, the same setup can be used to demo a touch screen using the laser pointer. But at that time, we thought touch screen as a given, and there is really nothing exciting in inventing another one.
Right now, I think the innovation Johnny did was about lowering the cost of building a touch screen. Johnny is a talented guy. I like his $14 stablizer, too.
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