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Video: Wi-Fi Imaging Lets You See Through Walls

Researchers use a perimeter of wireless nodes to detect moving human bodies inside buildings

SWAT teams and rescue workers may soon take advantage of wireless networks to locate people moving around inside buildings.

We previously examined this nifty wireless concept that uses off-the-shelf technology to locate humans to within 3 feet on the other side of walls. Now the researchers have released a couple of awesome videos showing the person-tracking tech in action.

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December 2009: Best of What's New

In our December issue, Popular Science names the 100 best innovations of the year: bombproof wallpaper, self-parking cars, the fastest helicopter, and 97 more. Plus inventor profiles and videos.

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