Sprint Nextel has become the first U.S. wireless carrier to launch a location-based service designed to let parents use a phone or PC to pinpoint the location of a child carrying any of 30 GPS-enabled phones. To activate the service, developed by California-based WaveMarket, parents and guardians can list up to four phone numbers they want to locate. The service, which costs $9.99 a month, then uses GPS technology to pinpoint the location and display it on an interactive map, along with the street address and surrounding landmarks, on the parent's or guardian's phone or PC. The child is notified by a text message each time his or her location has been provided. Both parent and child must be subscribers to either Sprint or Nextel.
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