Credit Card Number checking

This WebDNA talk-list message is from

1997


It keeps the original formatting.
numero = 10812
interpreted = N
texte = Does anyone know the check algorithms for valid credit card numbers. These must be well known, but I haven't every had any reason to use them.Thanks in advance.Dean Smith Associated Messages, from the most recent to the oldest:

    
  1. Re: Credit Card Number checking (Grant Hulbert 1997)
  2. Credit Card Number checking (Dean Smith 1997)
Does anyone know the check algorithms for valid credit card numbers. These must be well known, but I haven't every had any reason to use them.Thanks in advance.Dean Smith Dean Smith

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