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Posted by Brad Stevens on June 9, 2007, 9:09 pm


Alternatives to GPS. Local families of positioning technologies that
make use of short-range networks such as 802.11, Bluetooth, RFID,
ultrasound, UWB, IrDA, or TV radio signals.
Sensor node localization, people &asset tracking, mobile resource
management,and handset location-based services (LBS).

http://flying-rugs.com/wi-fi-and-rfid/