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  2. Luhn algorithm - Wikipedia

    en.wikipedia.org/wiki/Luhn_algorithm

    Luhn algorithm. The Luhn algorithm or Luhn formula, also known as the " modulus 10" or "mod 10" algorithm, named after its creator, IBM scientist Hans Peter Luhn, is a simple check digit formula used to validate a variety of identification numbers. It is described in US patent 2950048A, granted on 23 August 1960. [ 1]

  3. Payment card number - Wikipedia

    en.wikipedia.org/wiki/Payment_card_number

    A payment card number, primary account number ( PAN ), or simply a card number, is the card identifier found on payment cards, such as credit cards and debit cards, as well as stored-value cards, gift cards and other similar cards. In some situations the card number is referred to as a bank card number.

  4. Social Security number - Wikipedia

    en.wikipedia.org/wiki/Social_Security_number

    In the United States, a Social Security number ( SSN) is a nine-digit number issued to U.S. citizens, permanent residents, and temporary (working) residents under section 205 (c) (2) of the Social Security Act, codified as 42 U.S.C. § 405 (c) (2). The number is issued to an individual by the Social Security Administration, an independent ...

  5. ISO/IEC 7813 - Wikipedia

    en.wikipedia.org/wiki/ISO/IEC_7813

    ISO/IEC 7813. ISO/IEC 7813 is an international standard codified by the International Organization for Standardization and International Electrotechnical Commission that defines properties of financial transaction cards, such as ATM or credit cards. [ 1]

  6. Credit card - Wikipedia

    en.wikipedia.org/wiki/Credit_card

    Business credit cards are specialized credit cards issued in the name of a registered business, and typically they can only be used for business purposes. Their use has grown in recent decades. In 1998, for instance, 37% of small businesses reported using a business credit card; by 2009, this number had grown to 64%. [42]

  7. What Do Credit Card Numbers Mean? - AOL

    www.aol.com/finance/credit-card-numbers-mean...

    A credit card number is the set of digits printed on either the front or back of a physical credit card. Credit card numbers are often 16 digits, but they can be as long as 19 digits or as short ...

  8. What to do if someone opens a credit card in your name - AOL

    www.aol.com/finance/someone-opens-credit-card...

    Equifax.com 800-685-1111. Report the fraud to the FTC. Next, you’ll want to report the identity fraud to the Federal Trade Commission (FTC), which you can do with this online form or by calling ...

  9. Card security code - Wikipedia

    en.wikipedia.org/wiki/Card_security_code

    A card security code ( CSC; also known as CVC, CVV, or several other names) is a series of numbers that, in addition to the bank card number, is printed (but not embossed) on a credit or debit card. The CSC is used as a security feature for card not present transactions, where a personal identification number (PIN) cannot be manually entered by ...