johnl (12/12/82)
On credit cards the last digit of the card number is usually a check digit used only for validation. Does anybody out there know what the algorithm is? I believe that most credit card issuers compute it the same way. Mail answers to me, don't post to the net. Ignore the return address above and use one of the good ones below. I'll post the answer if there's interest. Thanks, as always, in advance. John Levine, decvax!yale-co!jrl, ucbvax!cbosgd!ima!johnl, harpo!esquire!ima!johnl, Levine@YALE (arpa). --------