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2. Visa Inc. - Wikipedia

   en.wikipedia.org/wiki/Visa_Inc.

   Visa Inc. Visa Inc. ( / ˈviːzə, ˈviːsə /; stylized as VISA) is an American multinational payment card services corporation headquartered in San Francisco, California. [1] [4] It facilitates electronic funds transfers throughout the world, most commonly through Visa-branded credit cards, debit cards and prepaid cards. [5]

3. Credit card - Wikipedia

   en.wikipedia.org/wiki/Credit_card

   For example, most modern credit cards have a watermark that will fluoresce under ultraviolet light. Most major credit cards have a hologram. A Visa card has a letter V superimposed over the regular Visa logo and a MasterCard has the letters MC across the front of the card. Older Visa cards have a bald eagle or dove across the front.

4. 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 U.S. Patent No. 2,950,048, granted on August 23, 1960.

5. Visa, Mastercard Will Lower Credit Card Fees — How It ... - AOL

   www.aol.com/visa-mastercard-lower-credit-card...

   On March 26, 2024, Visa and Mastercard, the two largest credit card issuers in the U.S., agreed to lower credit card interchange fees for merchants. MarketWatch reported that Visa and Mastercard ...

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

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

   Printed on a credit card, you'll find the card number, the cardholder’s name, when the card expires and the card's security code — all the details you need to make purchases online or in ...

7. Payment card number - Wikipedia

   en.wikipedia.org/wiki/Payment_card_number

   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.