Bluetooth questions

Hello, my name is Phathwa and i live in South Africa

I hope that you could answer these questions for me.

Is there a bluetooth device and software that is able to
track my 
movement (cellphone) within a room in real time, for example
if my 
cellphones bluetooth is switched on and i am walking around
a room can 
the bluetooth device on my computer detect that i am in a
different 
position as i walk around (can it measure the distance of
where i am 
from the computer and can it handle multiple cellphones)

Thank you for reading
Regards

Phathwa Senene
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On 04/17/07 05:25, phathwa senene wrote:
> Hello, my name is Phathwa and i live in South Africa
> 
> I hope that you could answer these questions for me.
> 
> Is there a bluetooth device and software that is able
to track my 
> movement (cellphone) within a room in real time, for
example if my 
> cellphones bluetooth is switched on and i am walking
around a room can 
> the bluetooth device on my computer detect that i am in
a different 
> position as i walk around (can it measure the distance
of where i am 
> from the computer and can it handle multiple
cellphones)


I don't know of a way to do that accurately, since you can't
rely on the 
timing of the signal due to walls, etc.  You could tell of a
bluetooth 
device is within range or not pretty easily.  Maybe it's
possible by 
triangulating, but still seems like it would be very
inaccurate.  Maybe 
bluetooth isn't the right way to tackle it, and instead
there's a 
different technology that you could use (RFID?).


Eric
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Hi --

 > Is there a bluetooth device and software that is able
to track my
 > movement (cellphone) within a room in real time, for
example if my
 > cellphones bluetooth is switched on and i am walking
around a room can
 > the bluetooth device on my computer detect that i am
in a different
 > position as i walk around (can it measure the distance
of where i am
 > from the computer and can it handle multiple
cellphones)

I don't believe you can do this terribly easily with
Bluetooth but perhaps you'd like to look at this
project with similar goals:

http://eve
nts.ccc.de/congress/2006/Sputnik

It worked pretty well.  It doesn't use triangulation
of timing like GPS, it works on signal strengths and
so is a bit approximate.

Regards,
Jonathan.
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