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Tracking Systems:
- tracking systems - for head, wand, glove, hands (position+orientation)
- electromagnetic (Flock of Birds, SpacePad, Polhemus)
- widely used, range 10 feet or more
- sensitive to metal, errors 40% at the max range
- mechanic
- very accurate, limited range, tethered
- ultrasound (Logitech), optical
- occlusion problems, user have to face transmitter
- Tracking errors cause VR experience to be less believable:
- difficult to pick
- perspective wrong
- communicate with other participants
- navigate