MIT researchers map city by cellphone

Researchers at MIT may not be able to hear your cellphone call, but they have found a way to see it. They mapped a city in real time by tracking tens of thousands of people traveling about carrying cellphones.

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<p><a href="http://www.physorg.com/news6483.html">MIT researchers map city by cellphone</a></p> <p>Researchers at MIT may not be able to hear your cellphone call, but they have found a way to see it. They mapped a city in real time by tracking tens of thousands of people traveling about carrying cellphones.</p>