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Saturday, May 28, 2005

Wi-Fi Networks Know Where You Are
It's a well-known fact that GPS devices perform better in rural areas than in urban ones, especially because their signals bounce upon buildings. This is not the case with Wi-Fi networks. So why not applying the concept of triangulation, central to GPS localization, to Wi-Fi?

In "One more way to find yourself," the Boston Globe tells us the story of a start-up company, Skyhook Wireless, which is using Wi-Fi networks to provide location-based services (LBS).

When you're walking or driving, your laptop or PDA can get the ID number of several Wi-Fi access points stored in Skyhook Wireless database, even if the signal is not strong enough to provide a connection. With these IDs, the company will plot a map of where you are.

Neat idea, but will it work if people move from an area to another one, taking away their access points with them? Anyway, this overview contains other details, references and pictures about these new location services.
:: posted by Roland Piquepaille, 3:32 PM Comments (0)
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