'Arse is the window of soul.'

A modern simple chair. However, the surface of its seat is covered in transparent plastic. Beneath the plastic hides a scanner; thus the chair is able to scan the bottom of whoever sits on it and print out the image a few minutes later, giving the sitter an exact picture of his or her 'derrière'. The chair delivers a new visual and interactive experience as well as entertainment for its users.

The chair's concept was inspired by streakers (buttocks in particular) in British popular culture. Recently, people all over the world feel more confortable to publically express their sexual interests due to this spreading global phenomenon. Therefore the i-Bum reflects this visual sexual context in post-modern popular culture.


IBumのビデオがYouTubeで12万回以上の再生され、Creative Review,The sunday times,NHK等様々な国のメディアで取り上げられました。

Creation and direction :
Tomomi Sayuda
Conceptual advice :
Nicolas Marechal, Joel Karamath, Biggles
Technical support :
Nicolas Marechal, Alcwyn Parker, Shozo Kuze
Furniture building :
Wayne Pritchard
Music :
Kumiko Yabu, Makoto Nomura

February 2011Art Mosh, Munich, Germany
January 2010 IMM Cologne (International furniture fair), Cologne, Germany
October 2009 Frieze Art Fair, Resonance FM booth,, London
September 2009 AD Agency Mother London

Past Exhibition


August 2010
Never use pop up windows/Anneloes van Gaalan,BIS publisher (Netherlands)

February 2010Crazy Tech, OLO editions (France)


21 January 2010 N24 (Germany) news

16 October 2009 NHK BS-2 Digital stadium (Japan)


Media appearance


2009-2014 Tomomi Sayuda all rights reserved