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Location-based Services (LBS) - Utilizing this, a mobile phone provider can send their subscribers customized advertising and other information based on the subscriber's current location. The subscriber's location is obtained from a GPS chip built into the phone, or by using radiolocation and trilateration based on the signal-strength of the closest cell-phone towers. www.mobilein.com/location_based_services.htm http://en.wikipedia.org/wiki/Location-based_service |
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