Validating credit card numbers in
We believe there's no need to share such information with providers without the actual intent to buy stuff.
Anyone can make a website with a form and require you to insert valuable and sensitive information which requires you to give up your privacy.
When we say they are valid, we merely imply that they are a possible combination of characters which will validate when passed through the MOD 10 algorithm.
You can also generate valid credit card numbers for specific Issuing Networks by utilising their particular prefixes.
Credit card validation is the first step in accepting a credit card payment.
Following a successful validation, a merchant will input the card number into a merchant software program or credit card machine, which sends the account number to the credit card issuer for authorization.
When the algorithm shows that the card is valid, it means only that the card number is among those that could potentially exist with a given credit card company.
For example, a random series of numbers would likely result in an invalid answer from the program, while an actual card number, even from a card that has expired or reached its credit limit, would show up as valid, since the number is one that the credit card company issued.Most credit cards and many government identification numbers use the algorithm as a simple method of distinguishing valid numbers from collections of random digits.The following steps are required to validate the primary account number (originally excerpted from but that page is no longer active): Step 1: Double the value of alternate digits of the primary account number beginning with the second digit from the right (the first right--hand digit is the check digit.) Step 2: Add the individual digits comprising the products obtained in Step 1 to each of the unaffected digits in the original number.While merchants who interact with their customers directly can view and handle credit cards, online merchants and those that accept credit card payments by phone must take steps to ensure that the credit cards they attempt to charge are valid.Validating a credit card refers to the process of running a computer algorithm that performs calculations using a credit card's number.This is the point in the process where a card may be rejected for insufficient remaining credit.