Re: Credit card number checker?

Dr. Evil pressed the little lettered thingies in this order... > > Thanks for the tip, but... there is a checksum in the CC card, which > is worth checking. Some others have sent me some code that checks > that. Or is that no longer valid? > Actually, I saw that... and maybe I'm wrong. When I first started doing eCommerce work (1995), I studied some case law and one of the credit card companies got succesfully sued for basing their numbers on a mathematical formula (the premise being that numbers could be calculated and are therefore insecure). As a result, a law (or maybe bill?) was written which forbade credit card companies from using any method other than random number generation (except for the card company id number). If what others are saying is true (which I assume it is), then this law must have been overturned (or was overturned before becoming law). I don't recall how old the case is, so it may have been a long time ago. At any rate, I'm interested to see what you come up with now. Christopher Ostmo a.k.a. tech@AppIdeas.com AppIdeas.com Innovative Application Ideas Meeting cutting edge dynamic web site needs since the dawn of Internet time (1995) For a good time, http://www.AppIdeas.com/