Virtual Wheelchair A virtual wheelchair project designed by Brian Duggan, a graduate mathematics student at UCSD and programmer at SDSC, and Jason Ditmars, a kinetic sculptor with a background in electronic and interactive installations, was featured as part of the CitySpace virtual reality project at SIGGRAPH 95. Ditmars and Duggan have designed a device that uses optical encoders to read the movement of standard wheelchair wheels and transfer the sensation of motion into a virtual landscape. The landscape was created using Alias and real-time interaction with the environment was made possible by Performer. All work was performed on Silicon Graphics machines. At SIGGRAPH, Duggan and Ditmars will provide a wheelchair accessible interface to the Performer-driven virtual space of CitySpace. Attendees were able to sit in a wheelchair provided by Duggan and Ditmars or use their own to experience wheelchair mobility in a virtual environment that is a a model for a city. Duggan and Ditmars have developed their own virtual environment that draws on a metaphorical relationship between the journey taken by information on the Internet and the journey taken by those in wheelchairs on the city pathways. Submitted by Zeke Rabkin http://www.sdsc.edu/SDSCwire/v1.2/2006.wheelchair.html http://www.sdsc.edu/IOTW/week34/iotw.html