I have no idea how this works but it looks cool

[MeridiaNx]

Seems kinda futuristic, and though the vid doesn't play a full piece it seems like a cool piece of kit in the right hands:

http://www.kontraband.com/show/show.asp?ID=5947&NEXTID=0&PREVID=2982&DISPLAYORDER=20070321195423&CAT=movies&NSFW=0&page=5&genre=0&rating=nsfw_sfw

Want to get my hands on that and have a play about!

[SoulKiss]

Heres (http://mtg.upf.edu/reactable/) how it works

Here is the same video as on youtube, but clearer -

http://mtg.upf.edu/reactable/videos/demo2_basic1.mp4

And 2 others

http://mtg.upf.edu/reactable/videos/demo2_basic2.mp4

http://mtg.upf.edu/reactable/videos/demo2_improv.mp4

Much more info on the website tho

In summary tho its a camera/projector setup to monitor whats on the table and provide visual feedback

David