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The San Francisco Museum of Modern Art hosted an RFID reception the evening of Oct. 27, 2005. Attendees were handed radio frequency identification (RFID) tags to place on their clothes. Then their movements were tracked, and their location throughout the evening was indicated on a screen.
Four RFID readers made by Alien Technology were placed in the museum's reception area so that people's movements throughout the room could be tracked. This green reader was located by the bar at the front door. People whose RFID history was mostly green or blue spent most of the time at the bar. Red indicated dancing, and yellow talking.