From: Jonathan Cooper <entropy@IntNet.net>
Date: Tue, 3 Jan 95 19:32:00 PST
To: "Paul J. Ste. Marie" <pstemari@erinet.com>
Subject: Re: Anonymous payment scheme
In-Reply-To: <9501040140.AB27685@eri.erinet.com>
Message-ID: <Pine.SV4.3.91.950103222122.23162B-100000@xcalibur>
MIME-Version: 1.0
Content-Type: text/plain


> I've heard of that, but I thought it was only a redundancy check to check 
> for read errors in the swiping process.

   That's why they use checksums - I have some information about the 
VISA-net authorization network (which came from Phrack) and also some 
about the actual encoding of the card, if anyone cares.

-jon

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