Well I've never heard of it and my card doesn't seem to have anything
fitting that description, so I'd say it's probably not standard.
Nothing like an example to answer a question.
Regards
Taz
----- Original Message -----
From: "Tobe Goldfinger" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Thursday, May 18, 2000 2:35 PM
Subject: validating credit card numbers
> You know that cute little 4 digit number that's now printed above your
> credit card number (on the front of the card? on the back of the card?) I
> understand it's more anti-fraud protection.
>
> a) Is this the standard now on all credit card types? (ie Visa, MC, Amex,
> Discover)
>
> b) Can I expect everyone to have it, if they have their card in hand or
> might there be old, not-yet-expired cards that don't have it.
>
> c) Does anyone have the rules for some kind of checksum algorithm that
> would verify that the extra few digits are in fact correct for that credit
> card number?
>
> tia,
> Tobe Goldfinger
> jdt technologies, ltd.
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