Location, Location, LocationVia Cell

Cell phones that track people's whereabouts may please sociable youth. But others worry about mobile presence's potential for privacy abuses

As with most cutting-edge wireless technologies, the ability to keep tabs on a friend's whereabouts via cell phone first took off in Asia. There, wireless carrier SK Telecom was among the pioneers of a service it calls "find friends," which provides a readout of a cell phone user's friends and loved ones—right on a handset screen. The capability is gaining ground in Europe (see BusinessWeek.com, 10/13/06, "Europe Takes to Location-Based Cell Service,") and as of last year has made its way to U.S. shores.

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