However, using the ImmersaDesk, participants are able to see both the fronts and the tops of models. While the CAVE and the ImmersaDesk are good for presenting work to small groups, they cannot easily handle more than five to ten people at a time. It is easy to share the VR experience in a projection-based system. Although only one user is tracked, others, if they stand close enough to the tracked user, can still view scenes from nearly the correct perspective. This feature comes for free with all projection-based systems.
Users can communicate naturally, and maintain visual contact and observe each other's gestures.
An HMD is carried on the user's head, and the weight of the display is on the neck. The BOOM employs a counterweight to overcome this problem. HMDs and BOOMs provide images which completely surround the viewer. The ImmersaDesk and Responsive Workbench provide only a limited panorama. In projection systems, head rotation causes the projection point to move by only a few inches.