Mark Ecko, of Ecko Unlimited, is designing "digital citylights" that people can interact with using their cell phones via Bluetooth interface. You walk up to one of these monster LCD screens and spray digital graffiti with the cursor of your phone. Allegedly they're going to be released in Germany, the land of the color changing bus stop, to see how they go over. And by go over I think they mean how long until they're covered in real paint, with tags like "RAZ" and "SPATZ" and huge blue dongs. I'm gonna have to go with instantly.
Cell Phone Graffiti [gizmodo]