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Stealthy Home Security ‘Sees’ Without Cameras

Stealthy Home Security ‘Sees’ Without Cameras

A new tech called Aura can spot burglars walking through the Wi-Fi radio waves that fill your house. WSJ’s Geoffrey A. Fowler tests the system that sees through walls. Illustration: Merrill Sherman/The Wall Street Journal

May 3, 2017

2:19

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