From: jamiel@sybase.com (Jamie Lawrence)
Date: Thu, 7 Jul 94 10:24:32 PDT
To: uunet!alias.com!rmartin@uunet.uu.net
Subject: Re: Mastercard, Visa, Access, Barclaycard, Amex, JCB ...
Message-ID: <9407071722.AB05853@ralph.sybgate.sybase.com>
MIME-Version: 1.0
Content-Type: text/plain


At 11:20 AM 07/07/94 -0400, Paul J. Ste. Marie wrote:
>The credit card swipers send the entire transaction in for both
>approval and reporting.  I'd imagine that the account number, merchant
>number, and transaction amount are all there, since that's all needed.
>Whether or not they encrypt the data I don't know.

I believe modern card readers for at least MC/Visa use some form of
encryption, but for backwards compatibility the central offices also
work unencrypted. In the hotel I used to work in, the card reader
certainly didn't encrypt.


-j
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___________________________________________________________________
Jamie Lawrence                                  <jamiel@sybase.com>