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2. 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 US patent 2950048A, granted on 23 August 1960. [1]

3. Address verification service - Wikipedia

   en.wikipedia.org/wiki/Address_verification_service

   Address verification service. An address verification service (AVS) is a service provided by major credit card processors to enable merchants to authenticate ownership of a credit or debit card used by a customer. [1] AVS is done as part of the merchant's request for authorization in a non-face-to-face credit card transaction.

4. 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.

5. Payment Card Industry Data Security Standard - Wikipedia

   en.wikipedia.org/wiki/Payment_Card_Industry_Data...

   According to Visa's compliance validation details for merchants, level-4 merchant compliance-validation requirements ("Merchants processing less than 20,000 Visa e-commerce transactions annually and all other merchants processing up to 1 million Visa transactions annually") are set by the acquirer. Over 80 percent of payment-card compromises ...

6. List of major credit card issuers and networks - AOL

   www.aol.com/finance/list-major-credit-card...

   U.S. Bank Altitude® Reserve Visa Infinite® Card *. U.S. Bank Triple Cash Rewards Visa® Business Credit Card *. Advantages of this card issuer: U.S. Bank credit cards may not be as popular as ...

7. Postal address verification - Wikipedia

   en.wikipedia.org/wiki/Postal_address_verification

   Postal address verification. Postal address verification (also known as address, address validation, address verification and CASS certification [1]) is the process used to check the validity and deliverability of a physical mailing address. According to the United States Postal Service, an address is valid (or mailable) if it is CASS-certified ...