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The document discusses location based services and technologies. It defines location based services as applications that leverage a user's physical location to provide enhanced services. It then outlines some of the main drivers for location based services, including adding location context to increase service value. The document also summarizes several techniques for identifying location, such as GPS, mobile positioning using cell towers, RFID localization, and WiFi localization. It provides brief overviews of how these techniques work.





























































