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From: sasdfb@dizzy.unx.sas.com (David Baker)
Subject: Position Location Devices
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Date: Fri, 27 May 1994 20:31:57 GMT
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Does anyone know of a position location device(s) which will allow one to
track their location say within a building with resonable repeatibility
and accurate to say a foot. GPS can do this outside, but I am interested
in a technology that would do this inside. By inside I mean in your
typical building with halls, rooms etc. An ideal solution would be one that
is easily portable and mobile. I have had suggestions and thought about
optical sensors, but this solution doesn't appear to fit the easily 
portable requirement unless I am missing something. 
 
I have looked at the devices which are currently used in Virtual Reality
applications and although they supply the information I need, they usually
have a very limited range (5 to 10 feet).

Any info would be greatly appreciated...Thanks in advance....Dave 
