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  2. What is a credit card security code? - AOL

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

    A credit card security code is a three- or four-digit code that’s unique to your card. In case a merchant asks, the security code goes by a few different names , mainly the: Card Verification ...

  3. 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 ...

  4. How to find your credit card's security code - AOL

    www.aol.com/news/2010-06-24-how-to-find-your...

    Another important thing to remember is that while websites and order forms will call your credit card's security code one of the following 5 abbreviations; CSC, CVV, CV2, CVC or CCV, they are all ...

  5. Card security code - Wikipedia

    en.wikipedia.org/wiki/Card_security_code

    There are several types of security codes and PVV (all generated from DES key in the bank in HSM modules using PAN, expiration date and service code): . The first code, 3 numbers, called CVC1 or CVV1, is encoded on track one and two of the magnetic stripe of the card and used for card present transactions, with signature (second track also contains pin verification value, PVV, but now it is ...

  6. Payment card - Wikipedia

    en.wikipedia.org/wiki/Payment_card

    Such cards are known by a variety of names, including bank cards, ATM cards, client cards, key cards or cash cards. There are a number of types of payment cards, the most common being credit cards, debit cards, charge cards, and prepaid cards. Most commonly, a payment card is electronically linked to an account or accounts belonging to the ...

  7. Security token - Wikipedia

    en.wikipedia.org/wiki/Security_token

    Type II PC Cards are preferred as a token as they are half as thick as Type III. The audio jack port is a relatively practical method to establish connection between mobile devices, such as iPhone, iPad and Android, and other accessories. [citation needed] The most well known device is called Square, a credit card reader for iOS and Android ...

  8. Credit card information: The basics you need to know - AOL

    www.aol.com/finance/credit-card-information...

    A Card Verification Value (CVV), also called a security code, is the three-digit number located on the back of your credit card near the signature box, typically under the magnetic strip. If you ...

  9. ISO/IEC 7813 - Wikipedia

    en.wikipedia.org/wiki/ISO/IEC_7813

    A notable exception to this is Germany, where Track 3 content was used nationally as the primary source of authorization and clearing information for debit card processing prior to the adoption of the "SECCOS" ICC standards. Track 3 is standardized nationally to contain both the cardholder's bank account number and branch sort code (BLZ).