Hi
I just read this article from New Scientist:

http://www.newscientist.com/blog/technology/2007/11/connecting-with-your
-community.html

which links to this project:

http://www.bluetoothtracking.org/

Basically, a guy in Apeldoorn, The Netherlands has setup a number of
bluetooth sniffers and is recording the details of any device which
passes by. Given multiple locations he has enough data to roughly
track people as they move around his area.

What a great idea!

Robin

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