From Wooster Collective:
This is by far one of our favorite culture jam projects we’ve seen to date: Three years ago, Docteur Gecko found a new way for ‘hacking’ advertising that you find in bus shelters around the world. What’s unique about what Gecko does is that his modifications can only be seen during the night when the city lights the shelters. However, during daytime the ad modified seems to be untouched.
Here.