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Where technology and culture collide

Thursday, October 01, 2009

Researchers see through walls via Wi-Fi

Researchers at the University of Utah have figured out how to see people moving on the other side of a wall using a specially configured Wi-Fi network. Basically, they blast Wi-Fi on one side and read the signals on the other side with multiple receivers. Moving bodies inside the room can be detected because they interfere slightly with the waves.


Anonymous StockC said...

The exact same thing can be accomplished for a lot less research and a lot less money by having those people pass between a battery of bright lights and a translucent wall. You'll see the shadows on the back side of the wall. For LOTS less money.

Thursday, October 01, 2009 7:01:00 PM  
Anonymous Neal White said...

Hey StockC, The exact same thing can be accomplished by installing a window and just looking through the window at the people in the room. Sheesh. did you even READ the article? This can be done without the people in the room knowing - try THAT with your bright lights in a hotel room.

Friday, October 02, 2009 8:51:00 AM  
Anonymous Anonymous said...

Even less expensive is an ancient technique called "holes". This technique evolved into doorways. A modern implementation is called "windows". All of these techniques allow moving objects to be detected in adjacent rooms and are considerably less cost and trouble than the article's approach.

Friday, October 02, 2009 4:40:00 PM  

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