Infrared Tracker

Infrared trackers are sometimes called optical trackers. They are one of five discrete kinds of tracker used for 3D positioning in VR hardware. Worn light reflectors are used, together with fixed camears to receive reflected light. If enough are used, it does not matter if some are occluded by body parts.

. This type of tracker is not affected by large amounts of metal, has a high update rate, and low latency. On the downside, bright lightsources will throw them off.

See Also: Tracking Device

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Infrared Tracker Tracking Device

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Creating a Budget Head-tracker with the Wii-Mote
A demonstration of both the use of a Wii-mote as a cheap head tracker, and a demonstration of head tracking, rarely recorded

Mazan: Flash of the Blade
An early commercial electromagnetic tracker system that surfaced in of all places, the arcade machines of 2002.

Controlling Devices by Muscle Movement

Mimi Switch, a Japanese muscle monitoring device, has an interesting premise. It looks like a normal set of headphones but is fitted with a set of infrared sensors that measure tiny movements inside the ear that result from different facial expressions.

VR Interfaces: Trazer

The Trazer by Cybex Incorporated. Billed as a virtual reality exercise machine, this $6,495 USD (?3,300) machine tracks an infrared belt worn by the exerciser, and uses changes in the position of that, and senses of increase or decrease in heat rate, to determine how much they are exercising.

GPS Tracker To Keep Pupils Safe
After the events at Virginia Tech University in the US, in April, a major push at using wearable technologies and sensor webs to improve student safety has been underway.

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