Make a building blink September 19, 2005
How cool is this?
When you look into the kiosk through the viewfinder (very much like peering into a pair of binoculars), the cameras record your eyes and beam the video to a nearby location where the images are projected onto a building which rather looks like it’s got a head. When you blink into the kiosk, the building’s head blinks also.
(Via Jason Kottke.)
old stuff, but your link made me think about it again: http://www.blinkenlights.de/