Perry H O B E R M A N Perry Hoberman, Bar Code Hotel, SGI Onyx, Next Cube, Macintosh computer, bar-code wands, stereoscopic graphic-projection system, spatialized sound, bar codes, 1994. (Production: Art & Virtual Environments, Banff Centre for the Arts) In this immersive environment for multiple participants, each guest who checks into Bar Code Hotel receives a lightweight wand that transmits bar-code information to a computer network. An entire room is covered with printed bar-code symbols, which may be "read' by the guests. Each symbol triggers and controls the presence, location, sound, form and behavior of virtual objects presented in a large stereoscopic display. With bar codes, every surface can become a responsive membrane, making an interface that can be used simultaneously by several people to control and respond to a projected real-time computer-generated three-dimensional world. (Perry Hoberman, c/o Telepresence Research, 320 Gabarda Way, Portola Valley, CA 94028, U.S.A.) For more images by Perry Hoberman, see the print journal L E O N A R D O Vol. 29, No. 1 (1996), available from the MIT Press (journals-orders@mit.edu).