From: Flying insect killer <kadafi@netcom.com>
Date: Sat, 7 Sep 1996 05:07:48 +0800
To: jim bell <jimbell@pacifier.com>
Subject: Re: Anonymous phone calls (was: What is the EFF doing exactly?)
In-Reply-To: <199609061607.JAA00624@mail.pacifier.com>
Message-ID: <Pine.3.89.9609061008.A10444-0100000@netcom20>
MIME-Version: 1.0
Content-Type: text/plain




On Fri, 6 Sep 1996, jim bell wrote:

> At 10:08 AM 9/6/96 EST, jbugden@smtplink.alis.ca wrote:
> >There is another spin possible on the reasons for replacement of pay phones with
> >credit card phones. In Canada all new credit card phones are also able to take
> >phone cards (which are anonymous).
> 
> Don't be too sure about the "anonymity" of these cards.  You don't have to 
> give your name when you buy or use them, but assuming a large number of 
> phone calls (to, from different locations) can be associated together after 
> the fact, your name can probably be fairly easily obtained.
> Jim Bell
> jimbell@pacifier.com

And phone companys that offers phone cards keep track of every call that 
goes thru each card number.