by Carson Reynolds
Alvaro Cassinelli, Ishikawa-sensei, and I have been working on this device to let people feel objects at a distance. It is a bit hard to describe in words, but Alvaro has gone to the trouble to make a video that makes things a bit more clear.
Cassinelli, A., Reynolds, C. and Ishikawa, M. (2006) Haptic Radar. The 33rd International Conference and Exhibition on Computer Graphics and Interactive Techniques (SIGGRAPH), August 1, 2006, Boston, Massachusetts, USA.