So Who's in the Office Next to Your's?

Slashdot reports that researchers at the University of Lausanne have worked out how to log keystrokes without installing any software on the machine whatsoever, simply by making use of the electromagnetic waves given off.

The techniques are effective to a range of 20 metres - even if there's a wall in the way - which is more than sufficient to use this for the most intrusive covert surveillance.