[comp.dcom.telecom] Cordless Phones: Are any 'Secure' From Handset to Base

callaghan@bss.enet.dec.com (02/16/91)

Question: Are there any 'secure' cordless phones??

After reading the  recent   comparisons/comments/conversations  around
cordless  phones I've not seen much  on any models   (nor have I found
any* vendors) who offer some  sort of secure link between  handset and
base (I.E. scramble, digitized, etc..)

Since cordless phones are SO open, and you can bet that someone may be
listening, I would consider this  a BIG plus that  could help a vendor
succeed over competitors in the marketspace.

Last summer's court case ( {Wall Street Journal} Aug ??) where an
individual (while eavesdropping via scanner on a cordless) gained
enough info to help get his neighbor arrested/tried for conspiracy (of
all things) is definitely enough for me to want to search out at least
a cheap sideband addon, or go back to the 500 foot extension cord.

Any product suggestions, comments, insights are eagerly requested.


[Moderator's Note: Back in my CB radio days many  years ago, I used to
frustrate the  neighbors by  talking on sideband  rather than AM. They
could still hear sounds coming from their television on channel 2 (and
indeed, they would say 'it must be  Pat  on  the radio  again', but at
least they couldn't  understand what I was  talking about! :) All they
got were 'Donald Duck sounds', as any of  you radio  guys  will attest
who've heard a sideband  transmission while  tuned to AM. Too bad  the
cordless  phone manufacturers can't  scramble their signal or at least
use lower / upper sideband, etc ... that would fix the majority of the
snoops, although a  dedicated person  would  tune  up the ham  rig and
listen anyway.  PAT]

ellisond@uunet.uu.net (Dell H. Ellison) (02/19/91)

In article <telecom11.122.2@eecs.nwu.edu>, callaghan@bss.enet.dec.com
writes:

> Question: Are there any 'secure' cordless phones??

I thought that there were several cordless phones out there that
automatically changed the frequency every fraction of a second so as
to keep the conversation somewhat secure.


[Moderator's Note: These are available. I don't know about 'several'
different models however. I think their cost would be / is prohibitive
from a consumer's point of view.   PAT]