Using Wi-Fi/Cellular In P2P Positioning

When Cyril Houri and a group of friends he refers to as “GPS alpha geeks” were frustrated by poor satellite reception in the big cities where they lived, they decided to do something about it. The result is Navizon, a wireless positioning system that works on Pocket PC PDAs by triangulating signals from Wi-Fi access points and GSM cellular towers. The company hard-launched today after three months of testing with a network of 5,000 users.
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