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Off the grid: Is it possible to go surveillance-free for a day?

Kevin Roose wore a silly, red hat every time he went outside last Friday. Why? He's hiding from the feds, of course. Wired with tiny light bulbs connected to a

Workers use their mobile phones in London's City financial district, Friday, June 29, 2012. (Photo by Lefteris Pitarakis/AP)
Workers use their mobile phones in London's City financial district, Friday, June 29, 2012.

Jane Timm