TV News LIES

Saturday, Dec 16th

Last update05:20:13 AM GMT

You are here News Science Seeing Through Walls With a Wireless Router

Seeing Through Walls With a Wireless Router

U.S. Navy researchers stumbled upon the concept of radar when they noticed that a plane flying past a radio tower reflected radio waves.

Scientists have now applied that same principle to make the first device that tracks existing Wi-Fi signals to spy on people through walls.

When a radio wave reflects off a moving object, its frequency changes—a phenomenon called the Doppler effect. Their radar prototype identifies frequency changes to detect moving objects. It’s about the size of a suitcase and contains a radio receiver composed of two antennas ­and a signal-processing unit.

In tests, they have used it to determine a person’s location, speed and direction—even through a one-foot-thick brick wall. Because the device itself doesn’t emit any radio waves, it can’t be detected.

More...


Most Recent Related Stories...


Newly discovered Earth-sized planet looks to be life-friendly

Newly discovered planet seems to be life friendly Scientist have discovered a nearby Earth-like exoplanet with conditions favorable to life. The planet orbits Ross...

Most complete tyrannosaur fossil in Southwest excavated in Utah

Tyrabbisaur foccil found in UtahPaleontologists have completed the excavation of a 76 million-year-old tyrannosaur fossil in southern Utah. With approximately...

Stephen Hawking's expanding universes thesis breaks the internet

Stephen Hawking PhD thesis breaks Internet siteStephen Hawking’s 1966 doctoral thesis has broken the internet after becoming available to the general public...

Ancient sea turtle reveals pigment-based survival trait at least 54 million years old

Turtle 54 million years old Scientists have recovered beta-keratin and muscle proteins from the remains of an ancient sea turtle...
 
America's # 1 Enemy
Tee Shirt
& Help Support TvNewsLIES.org!
TVNL Tee Shirt
 
TVNL TOTE BAG
Conserve our Planet
& Help Support TvNewsLIES.org!
 
Get your 9/11 & Media
Deception Dollars
& Help Support TvNewsLIES.org!
 
The Loaded Deck
The First & the Best!
The Media & Bush Admin Exposed!