Looks like wearing a tin-foil hat is not enough to keep those spying baddies away from you. You need proper shielding around your keyboard cables, too:
Security researchers found that poor shielding on some keyboard cables means useful data can be leaked about each character typed.
By analysing the information leaking onto power circuits, the researchers could see what a target was typing.
The attack has been demonstrated to work at a distance of up to 15m, but refinement may mean it could work over much longer distances.
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