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Re: In-building location determination using wireless?

From: Steve Barr <>
Date: Fri, 30 May 2003 22:13:57 -0400

McCarty, Paul wrote:
> I would say this is next to impossible.

Oh, if you search the web it's clearly been done; the
accuracy may not be thrilling, but it could be good
enough for some uses (where are the nearest exits, am
I near my desk and moving toward it or away from it,
etc).

> I know there are some hooks to measure signal strength, but all it takes
> is one wall thicker then another and you lose signal strength. Or a
> floor say? You'd be better off writing coordinates on the wall! :-)

This afternoon I did joke with a coworker about OCR'ing the
office numbers to get location.

> Another alternative is they sell GPS repeaters.

Thanks; I didn't know that.

> I would suggest looking into an intertial/accelerometer sensor.

Thanks; that's an interesting idea.  I guess you could choose
a spot at which to activate it at each location (home, school,
work, etc.)

I am interested in workstation-class systems (whatever
that means) ;-) as wearables, so it would be reasonable
to assume the processing power would be there to compute
the location from either wacky wireless signals or
other sensor data.

Mainly I was hoping to leverage existing work so I
could concentrate on the aspects of wearables I
want to pursue without losing time recreating
existing work.  I guess I can always fake it and
enter the locations manually.

Steve
-- 
http://www.stevebarr.com
100% my opinions.

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