I see an emerging market demand for a quality manufactured version of the infrared LED pen, as demonstrated, for use with the inexpensive interactive whiteboard.

I love this approach of using powerful, but cheap, technology to bring a powerful new tool to the masses.

I think Google was the first one to really dominate this approach (or bring to market) they started with super cheap hardware... (and I think they still use commodity hardware)...

- I think its equally cool that he can get his PHD from hacking together a gaming system into something usable

I think his thesis actually focuses on using infrared tracking to project light onto moving targets. I guess it's still hacking a gaming system but I think that project is actually quite a bit more complicated than the white board.

Johnny Lee == the new Jeff Han

this guy is awesome, but the funny part is probably a lot of the people at TED could buy an interactive whiteboard for 2k.

the head tracking thing was done before johnny lee. it actually made it to market but was unpopular. his version looks easier and cheaper to implement. hopefully we'll see some support for games and tele-conferencing apps.

this is awesome! Now, could you do the hand tracking a' la minority report as well? Seems like it.