I read a report once, that in general, you don't even need radio waves. Each keyboard key emits square waves on the cable, which can be picked up within a few feet, OR each key makes a distinct sound when pressed, which can be picked up by a microphone.

Although they are not as widely available as audio bugs, I'm convinced that there are computer bugs, that someone can place under your desk, and pickup your keyboard cable.

I'm not really a human, but I play one on earth Remember How Lucky You Are

In reply to Re^3: problem related to project key counter by zentara
in thread problem related to project key counter by anonymoushydrogen

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