CAVE systems are tracked (Score 1)

The user is tracked in most CAVE systems via a magnetic tracker (usually something like an Ascension Flock of Birds). Most user-interface items such as pointers and/or steering wands are tracked in the same way. The main user can walk around the CAVE environment and the tracking program will take their position into account during rendering. Other users in the system must stay close to the main user if they want to have an immersive experience. Otherwise, their view will be skewed.