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Backpack to the future: The device that lets you see through walls (and is small enough to fit in a rucksack)

May 5, 2011 | William Zimmerman
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  • The Prism 200c can see through wood, concrete and bricks
  • It is the first device of its kind to be small enough for one person to use
A British company has developed a backpacked-sized machine that lets you see through walls.

The Prism 200c looks through solid objects then displays an image of what is on the other side on a hand-held screen.

It is the first time such a device has been manufactured small enough for just one person to use.


Makers Cambridge Consultants expect it will be used by law enforcement agencies, emergency services or soldiers in 'high-risk and hostile situations with minimal time and very narrow margin for error'.

The Prism can see through wood, concrete or bricks and gives a 3-D image of any movement inside the building.

Users stand with their back to the wall as the machine scans using ultra-wideband radio frequencies then look at the display to see what is going on.

The machine can also be linked up remotely to computers so commanders back at base know what is going on.

Ultra-wideband, also known as pulse radio, is very hard to detect and is able to work in a large area.

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