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Credit Card Validator will also provide a determined card type (using credit-card-type).

This is useful for scenarios in which you wish to render an accompanying payment method icon (Visa, Master Card, etc.).

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The check digit (x) is obtained by computing the sum of the non-check digits then computing 9 times that value modulo 10 (in equation form, ((67 × 9) mod 10)).

In algorithm form: This makes the full account number read 79927398713.

Most credit cards and many government identification numbers use the algorithm as a simple method of distinguishing valid numbers from mistyped or otherwise incorrect numbers.

The sum of all the digits in the third row is 67 x.

The calculation to compare a credit card number against its check sum is known as the Luhn algorithm.

Last modified 04-Mar-2020 11:41