Luhn algorithm credit card number checker

Open spreadsheets https://spreadsheets.google.com/ccc?key=0AppCRCbx33I9dDJ2Q3pta1o1QVR6TDRQWXBvaUNvb3c&hl=en

Credits http://en.wikipedia.org/wiki/Luhn_algorithm


Unknown said...

ed thi is test

Unknown said...

ed tis is a taste

nevinchen said...

cool man.
keep up the good work

skitbow said...

Will this check to make sure the card given is actually a correct credit card number, or just that it has the right amount of numbers?