Changes

A metallic object has to be at least a foot or two away from a tracking area so the metallic object doesn't interfere with the tracking measurements. Metallic objects cause jitter and drift.

A metallic object has to be at least a foot or two away from a tracking area so the metallic object doesn't interfere with the tracking measurements. Metallic objects cause jitter and drift.

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==History==

==Companies==

Electromagnetic tracking was invented in about 1970 by [[Polhemus]]. Another company that has made electromagnetic tracking gadgets is [[Ascension Technologies]].

Electromagnetic tracking was invented by [[Polhemus]]. Another company that has made electromagnetic tracking gadgets is [[Ascension Technologies]].

* [[Polhemus]]<ref name="c061">{{cite web | last=Data | first=Stats N | title=Electromagnetic Tracking System Market | website=Empowering Insights | url=https://www.statsndata.org/report/Electromagnetic-Tracking-System-Market-191994 | access-date=2024-05-31}}</ref>

* [[Polhemus]]<ref name="c061">{{cite web | last=Data | first=Stats N | title=Electromagnetic Tracking System Market | website=Empowering Insights | url=https://www.statsndata.org/report/Electromagnetic-Tracking-System-Market-191994 | access-date=2024-05-31}}</ref>

* [[NDI]] (previously called Ascension)<ref name="c061"/>

* [[NDI]] (previously called Ascension)<ref name="c061"/>