Re: Beastly, perhaps, but:
If you DID have some sort of magic implant that could transmit information by radio waves over long distances, by its very nature it could not be very highly powered, and some huge antenna would have to be at the other end.
Anyway, how hard could it be to cover your implant with some kind of shielding if you wanted to shut it up?
Tinfoil hats, anyone?
