Life (rhizome) No. 5 by Tatsuo Miyajima, 2012
This piece can be paralyzing (in a good way) if you stare at it for a while. It certainly mesmerized everyone walking by. It uses LED, IC, a microcomputer, electric wire, and a passive sensor, all within a stainless iron frame. It's from Tokyo's SCAI The Bathhouse at booth K4.