Mike McNally says:
Robert Cain writes:
A device can be made right now at lower cost than a computer modem, much lower, that could be inserted between any phone and the wall that would make it impossible, no matter what laws are in place, to tap either passively or acitively, communication that passes between two of these devices. I know how to do it, could do it and probably will just for the fun of it at least.
Uhh, could you tell us? Sounds like quite a breakthrough. Credit card sized? Much cheaper than a modem, like $50 maybe? And it digititizes and securely encrypts speech (full duplex?) on the fly?
By definition anything that does this in the digital domain needs a modem, so it can't be cheaper than a modem. None of the analogue methods are going to be terribly secure. .pm