How Cell Phones Reveal Your Location - Computerphile

Many of us use Location Services & GPS on smartphones but Cell Phone Companies have been able to track us for a long time. Professor Derek McAuley explains.

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Security of Data on video was filmed and edited by Sean Riley.

Computer Science at the University of Nottingham: is a sister project to Brady Haran's Numberphile. See the full list of Brady's video projects at:

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