Addis Ethiopia Weblog

Ethiopia's World / የኢትዮጵያ ዓለም

They Can See You Through Walls

Posted by addisethiopia / አዲስ ኢትዮጵያ on October 17, 2009


This is potentially great news for firefighters trying to locate people trapped in burning buildings, and for police SWAT teams faced with the task of rescuing hostages. And it might be a boon to home-security companies tasked with detecting burglars. But it’s hard not to see an Orwellian degree of potential for privacy-eroding surveillance as well.

Two engineers from the University of Utah showed that a wireless network of radio transmitters can track people moving behind solid walls.

Their method uses radio tomographic imaging (RTI), which can “see,” locate and track moving people or objects in an area surrounded by inexpensive radio transceivers that send and receive signals. People don’t need to wear radio-transmitting ID tags.

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