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  2. Payment card number - Wikipedia

    en.wikipedia.org/wiki/Payment_card_number

    Payment card numbers are composed of 8 to 19 digits, [1] The leading six or eight digits are the issuer identification number (IIN) sometimes referred to as the bank identification number (BIN). [2] : 33 [3] The remaining numbers, except the last digit, are the individual account identification number. The last digit is the Luhn check digit.

  3. Luhn algorithm - Wikipedia

    en.wikipedia.org/wiki/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 U.S. Patent No. 2,950,048, granted on August 23, 1960. [1]

  4. Debit card - Wikipedia

    en.wikipedia.org/wiki/Debit_card

    A debit card, also known as a check card or bank card, is a payment card that can be used in place of cash to make purchases. The card usually consists of the bank's name, a card number, the cardholder's name, and an expiration date, on either the front or the back. Many new cards now have a chip on them, which allows people to use their card ...

  5. Add, edit, or delete a payment method for AOL services

    help.aol.com/articles/update-your-payment-method

    If your card number has changed, you must add a new card.. 1. Sign in to your My Account page. 2. Click My Wallet. 3. Click Payment Methods. 4. Click Add Credit or Debit Card. 5.

  6. Contactless payment - Wikipedia

    en.wikipedia.org/wiki/Contactless_payment

    Contactless payment systems are credit cards and debit cards, key fobs, smart cards, or other devices, including smartphones and other mobile devices, that use radio-frequency identification (RFID) or near-field communication (NFC) for making secure payments. The embedded integrated circuit chip and antenna enable consumers to wave their card ...

  7. Accepted payment methods for AOL services - AOL Help

    help.aol.com/articles/payment-methods-available-CS41

    Accepted payment methods. Credit or debit cards• American Express. • Visa (credit or debit) • Discover (credit or debit) • MasterCard (credit or debit) Direct debit is no longer available for active accounts, however, it can be used to pay past due balances, with a $7 fee.

  8. Credit card fraud - Wikipedia

    en.wikipedia.org/wiki/Credit_card_fraud

    Credit card fraud is an inclusive term for fraud committed using a payment card, such as a credit card or debit card. [1] The purpose may be to obtain goods or services or to make payment to another account, which is controlled by a criminal. The Payment Card Industry Data Security Standard (PCI DSS) is the data security standard created to ...

  9. Tokenization (data security) - Wikipedia

    en.wikipedia.org/wiki/Tokenization_(data_security)

    Tokenization, when applied to data security, is the process of substituting a sensitive data element with a non-sensitive equivalent, referred to as a token, that has no intrinsic or exploitable meaning or value. The token is a reference (i.e. identifier) that maps back to the sensitive data through a tokenization system.