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  2. 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. The card number is primarily a card ...

  3. Card security code - Wikipedia

    en.wikipedia.org/wiki/Card_security_code

    American Express usually uses the four-digit code on the front of the card, referred to as the card identification code (CID), but also has a three-digit code on the back of the card, referred to as the card security code (CSC). American Express also sometimes refers to a "unique card code". [2] "CVD" or "card verification data": Discover

  4. What do the numbers on your credit card mean? - AOL

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

    The numbers on a credit card help identify the credit card network, the company that issued the card and the cardholder. Credit card numbers are either 15 or 16 digits, with each digit having its ...

  5. What Is a Credit Card Security Code and Why Is It ... - AOL

    www.aol.com/credit-card-security-code-why...

    A card security code is a three- or four-digit number on the back of credit and debit cards that ensures the authenticity of transactions when a physical card is not presented at the point of sale ...

  6. Personal identification number - Wikipedia

    en.wikipedia.org/wiki/Personal_identification_number

    The first ATM system was that of Barclays in London, in 1967; it accepted cheques with machine-readable encoding, rather than cards, and matched the PIN to the cheque. [ 5 ] [ 6 ] [ 7 ] 1972, Lloyds Bank issued the first bank card to feature an information-encoding magnetic strip, using a PIN for security. [ 8 ]

  7. Electronic identification - Wikipedia

    en.wikipedia.org/wiki/Electronic_identification

    An electronic identification ("eID") is a digital solution for proof of identity of citizens or organizations.They can be used to view to access benefits or services provided by government authorities, banks or other companies, for mobile payments, etc. Apart from online authentication and login, many electronic identity services also give users the option to sign electronic documents with a ...

  8. What Is a Credit Card Security Code and Why Is It ... - AOL

    www.aol.com/finance/credit-card-security-code...

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  9. Organizationally unique identifier - Wikipedia

    en.wikipedia.org/wiki/Organizationally_unique...

    However, since IEEE 802.3 (Ethernet) and IEEE 802.4 send the bytes (octets) over the wire, left-to-right, with least significant bit in each byte first, while IEEE 802.5 and IEEE 802.6 send the bytes over the wire with the most significant bit first, confusion may arise when an OUI in the latter scenario is represented with bits reversed from ...