The Credit Card Validation Amanuensis 1.3 Amanuensis will
help you tell
1. if a credit card number is valid,
2. which credit card vendor handles that number.

It is a simple Applet to demonstrate the use of the
CreditCard class.

It validates the prefix and the checkdigit. It does
*not* contact the credit card company to ensure that number
has actually been issued and that the account is in good
standing.

It will also tell you which of the following credit card
companies issued the card: Amex, Diners Club, Carte Blanche,
Discover, enRoute, JCB, MasterCard or Visa.

ATM cards use a different secret scheme which this program
does not handle.  Unfortunately, there is not even a reliable
way to tell an ATM card from a credit card just by the number.


Copyright 1996-2004 Canadian Mind Products

$10 US shareware.

Buy online at http://mindprod.com/products.html#CREDITCARD
or send cheques only (sorry, ironically no credit cards)
payable to Canadian Mind Products to:

Roedy Green
Canadian Mind Products
#327 - 964 Heywood Avenue
Victoria, BC V8V 2Y5
(250) 361-9093

May be freely distributed and used for any purpose but
military. For more details on the restriction, see
http://mindprod.com/roedy.html#NONMILITARY

The distributed version is absolutely identical to the
registered version, and includes Java source.