GSM localization is the use of GSM mobile phones to determine the location of the user. A location-based service (or LBS) in a cellular telephone network is a service provided to the subscriber based on her current geographic location. This position can be known by user entry or a GPS receiver that she carries with her, but most often the term implies the use of a radiolocation function built into the cell network or handset that uses triangulation between the known geographic coordinates of the base stations through which the communication takes place.
via [ my Positions ]
