For computing, a fisheye renderer is used. When the image is projected on the dome from in front of the chair using a standard DLP projector, it stretches around the dome restoring the original perspective caught by the fisheye lens. The image can be seen on both sides of the screen so that other people can see what you are watching. Standard non fisheye images can be projected as well, so that existing video, DVDs, games, DBS, cable and HDTV programs can be watched. Not all programming works, but much of it does.
Car racing is wonderful, for example.
The dome demands high resolution however, and digital progressive images are preferred over NTSC interlaced sources. The dome is capable of very high resolution and is only limited by the resolution of the projector. The dome tilts back for entry and exit and rests on a small platform when retracted. The position of the dome can be adjusted by raising and lowering a spring loaded catch on the restraining cable on the back of the chair. The dome should be close to, but not touching, your chest.