I'm in the market for a cheap device that will detect this and a variety of other such attacks. Bonus points and bonus money if it can somehow reveal the physi

I'm in the market for a cheap device that will detect this and a variety of other such attacks. Bonus points and bonus money if it can somehow reveal the physical location of the attacking device. Perhaps in the manner of a Geiger counter (some sound or light changes as you approach the attacker).