"In Sept 2007 I plugged in a 100-meter USB bluetooth adaptor and I noticed names of phones/devices with bluetooth in the area popping up on my computer screen. This was when the idea to set up a network of scanners around my town (Apeldoorn, the Netherlands) to track people was born."
http://www.bluetoothtracking.org/
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Tracking People Using Bluetooth.
damdam writes from Slashdot.org "A Dutch guy seems to have set up a
small network of bluetooth scanners. He has all the information logged
to a central database and you can search it over the web. On his website
it says "Some of these matches were only minutes apart. Therefore I
could even calculate the approximate speed of someone moving from one
location to
another.".
There are also some interesting statistics on his site
showing traffic volume in his hometown (based on bluetooth signals) and
he even lists popularity of certain Nokia phones. It's interesting to
see how much information an individual can gather using old equipment."
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