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  2. Why do debit and credit cards have expiration dates? - AOL

    www.aol.com/finance/why-debit-credit-cards...

    For example, you can use this opportunity to upgrade from a student credit card to a cash back credit card for good credit or to switch from a traditional rewards credit card to a premium travel ...

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

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

    The expiration date: The expiration date on a credit card typically comprises four digits, including two digits for the month and two digits for the year. For example, a credit card that expires ...

  4. 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 ...

  5. 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 ...

  6. Payment terminal - Wikipedia

    en.wikipedia.org/wiki/Payment_terminal

    PAX Technology S90 credit card terminal with a Visa card inserted.. A payment terminal, also known as a point of sale (POS) terminal, credit card machine, card reader, PIN pad, EFTPOS terminal (or by the older term as PDQ terminal which stands for "Process Data Quickly" [1]), is a device which interfaces with payment cards to make electronic funds transfers.

  7. ISO/IEC 7813 - Wikipedia

    en.wikipedia.org/wiki/ISO/IEC_7813

    Track 1 can store up to 79 alphanumeric characters. ISO 7813 specifies the following structure for track 1 data: [2] SS : Start sentinel "%" FC : Format code "B" (The format described here. Format "A" is reserved for proprietary use.) PAN : Payment card number 4400664987366029, up to 19 digits; FS : Field separator "^"

  8. Authorization hold - Wikipedia

    en.wikipedia.org/wiki/Authorization_hold

    Authorization hold (also card authorization, preauthorization, or preauth) is a service offered by credit and debit card providers whereby the provider puts a hold of the amount approved by the cardholder, reducing the balance of available funds until the merchant clears the transaction (also called settlement), after the transaction is completed or aborted, or because the hold expires.

  9. Control excessive spam email - AOL Help

    help.aol.com/articles/Control-excessive-spam-email

    Check credit card and bank statements for illegitimate transactions. • Log in to your shopping accounts to make sure orders weren't falsely placed. • Check and secure all of your accounts (i.e. email, stores, bank accounts, etc.). Concerned your AOL account has been compromised? - Learn how to recognize a hacked account.