MIT researchers map a city by cell phone:-

MIT researchers map a city by cell phone:-
Webindia123, India - Sep 21, 2005 Massachusetts Institute of Technology researchers, say they've mapped a city in real time by tracking thousands of cell phone calls.

Charge filed in cell phone hoax that prompted frantic search
Kansas City Star, MO - 20 hours ago David Thornburg wrote that Crews repeated her story when county dispatchers called her cell phone and later told Thornburg that she could not call 911.