“…Though most haptic devices are used with simple stereo monitors or head-mounted displays for visualization, these limit the number of participants in the simulation, restrict the user's movement, and in general don't provide the level of immersion that projection screen environments do. While work has been done that utilizes more specialized types of force feedback in such environments (Edwards, 1998), many challenges remain before general purpose commercial haptic feedback in projection screen virtual environments becomes truly practical.…”