🚀 go-pugleaf

In article <1989Oct19.143522.7686@ux1.cso.uiuc.edu> kadie@herodotus.cs.uiuc.edu.UUCP (Carl M. Kadie) writes:
>>In article <OTTO.89Oct17163149@tukki.jyu.fi> otto@tukki.jyu.fi (Otto J. Makela)
>>writes:
>>>Preventation: does anyone know of cheap but reasonably reliable scramblers ?
>
>In article <790@ariel.unm.edu> ee5391aa@hydra.unm.edu.UUCP (Duke McMullan n5gax) writes:
> ...
>>Cheap and hard to defeat -- I don't think it exists, but it could, and the
>>technology is HERE TODAY! It actually wouldn't be hard to integrate the whole
>>schmeer, including D/A, A/D, key management, (en/de)cryption, and an automatic
>>slicer-dicer for carrots all on the same chip. The thing that would make it
>>cheap is volume production, which probably won't happen, at least not soon.

I've seen a device that fits over your phone advertised in this last summer's
issues of High Times (what? You don't read HT?) .  Basically you have one at 
each end and it fits over the handset.  It has a keypad and allows some fairly
large number of possible codes.  The person on the other end must be using the
same code.

I'm pretty certain it was digital.  I believe that each handset device
was about $100.  It seemed fairly reasonable.