Page last updated at 01:58 GMT, Saturday, 23 January 2010

Tests reveal 'bomb detector' cannot work

A BBC Newsnight investigation has revealed that a "bomb detector" sold around the world and particularly to Iraq by a British company cannot possibly work.

Reporter Caroline Hawley took the central component of the "detector" - a card which it is claimed can detect explosives - to the Cambridge Computer Laboratory to be tested by Dr Markus Kuhn.

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