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1995-11-16 - Re: credit card conventional wisdom (fwd)

Header Data

From: Simon Spero <ses@tipper.oit.unc.edu>
To: cypherpunks@toad.com
Message Hash: 6e7db889835794fc604a8465a4ab92451800db2cacac33b223fb5f97505e8322
Message ID: <Pine.SOL.3.91.951115184015.18971A-100000@chivalry>
Reply To: <Pine.SOL.3.91.951115182044.18955B-100000@chivalry>
UTC Datetime: 1995-11-16 03:09:14 UTC
Raw Date: Thu, 16 Nov 1995 11:09:14 +0800

Raw message

From: Simon Spero <ses@tipper.oit.unc.edu>
Date: Thu, 16 Nov 1995 11:09:14 +0800
To: cypherpunks@toad.com
Subject: Re: credit card conventional wisdom (fwd)
In-Reply-To: <Pine.SOL.3.91.951115182044.18955B-100000@chivalry>
Message-ID: <Pine.SOL.3.91.951115184015.18971A-100000@chivalry>
MIME-Version: 1.0
Content-Type: text/plain



Further info:

  The AMEX digits aren't part of the standard info- someone I spoke to 
who started off as a grey box programmer said that he thought they were 
just process control. 

  Card-present/Card-not-present can be determined from info on the 
magnetic stripe; for visa cards, this info is stored in a three-digit 
checksum at the end of the discretionary info.

Card Imprints taken with no online authorisation are typically charged a 
transaction fee of 3-6%: with authorisation, 1.5-3%.  ATM card 
transactions  are charged at around $0.10 per transaction.


Simon

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