- Title: O
- Year: 2015
- Artist: Byeong Sam Jeon
- Category: Participatory Kinetic Sculpture
- Dimensions: 10m * 10m * 10.4m (W*D*H)
- Commission: Korea Airports Corporation 
- Location: Gimpo International Airport (Seoul)
- Media: Steel, Flipdot Modules, Motors, Controllers, Touch-Kiosk, and Misc.
- Participation Note: Anyone can upload his/her portrait on the surface of the work 'O' via the front kiosk at the Gimpo international airport.