The omnivisu Box was set-up right at the main passage to the platforms of the highly frequented Berlin S-Bahn. Pedestrians would be invited to take a look through the two lit holes. There were two security video cameras installed inside, pointed towards the user’s eyes. The signal was transmitted through analog av-transmitters of the type you can get at any wharehouse. Two of them were taped to a satellite-dish and installed on top of the kisok next to the box. The av-receivers were taped right to the inside of the tower’s glass windows. The signal was fairly stable and only needed a few adjustments during the ten days it was installed. The distance between transmitters and receivers would have been around 300 meters.