Target has some new windows that are reactive. They are a bit weak but its nice to see the world is moving forward.

I saw some of the future this weekend. Photos

Such a great idea, find something inspiring and paint with it. Another brilliant tool from MIT Media Lab. Thanks for the find Gerald.
I/O Brush Site
I/O Brush Video (Quicktime)

Ars Electronica festival in Linz, Austria. Thanks to ni9e.

Watch Video
The “suck” sensor, very cool. click