Unbreakable
Bluelighter

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.
Source:
http://www.dailymail.co.uk/sciencet...ism-200c-device-lets-walls.html#ixzz1LKoj5HKr
Video:
http://www.youtube.com/watch?v=t2ehrcyAnXc&feature=player_embedded
Pretty sweet if you ask me
