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From: jimb@silvlis.com (Jim Budler)
Newsgroups: comp.dcom.telecom
Subject: Re: AT&T Universal Card is Not Two Cards in One
Message-ID: <12653@accuvax.nwu.edu>
Date: 26 Sep 90 23:47:20 GMT
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Reply-To: Jim Budler <jimb@silvlis.com>
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In article <12594@accuvax.nwu.edu> matt_mcgehrin@pro-graphics.cts.com
(Matthew McGehrin) writes:

>Another thought came to mind about the 'AT&T Universal Card': Just
>think, if you use the 'card' to charge purchases, your 'phone number
>with four-digit code', along with the 'ATT Credit card number' goes on
>the same slip (since its one huge carbon) 

Nope.

The calling card number bears no relation to my phone number, and the
PIN portion is not embossed on the card. It arrives by seperate post
after the card arrives. While a binary search of the 10,000
possibilities is not an impossibility, I would hope the security
system would invalidate any calling card number if sufficient probes
against it occured.

With any credit card the issuing bank information is contained within
the credit card number. So what? It isn't the bank where I have any of
my other accounts. This statement is true both of the AT&T Universal
card I hold, and of the Visa card I acquired from the same bank at
which I *do* have my checking and savings account.  This is because
although my bank accepted my Visa application, the card itself was
issued by a regional clearing house.


Jim Budler          jimb@silvlis.com       +1.408.991.6115
Silvar-Lisco, Inc. 703 E. Evelyn Ave. Sunnyvale, Ca. 94086