| A | B |
|---|
| Desktop | Type of virtual reality that does not require additional equipment |
| Immersion | Eyes, ears, or other body senses are isolated from real environment and fed information that is generated by the computer. |
| Telepresence | This technique is used in the movie industry to create animations by using body sensors to record human motions and transfer them to animated subjects. |
| Interface devices | head-mounted display (HMD) and facial sensor/body suit |
| Interface devices | wand and data glove |
| Head-Mounted Display | Is popular with the entertainment industry. |
| Wand | Is simplest of interface devices. Most have on/off buttons. Some have knobs, dials, or joy sticks, and they operate with six degrees of freedom. |
| BOOM | Is similar to HMD – but no helmet. A viewing box is suspended from a rotating arm. |
| CAVE | most "immersive" virtual environment and is like climbing into the computer's screen |
| Shared Virtual Environments | networked users at different locations (anywhere in the world) meet in the same virtual world by using a BOOM device, a CAVE system, and a Head-mounted Display |
