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2. Luhn algorithm - Wikipedia

   en.wikipedia.org/wiki/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.

3. Green Dot Corporation - Wikipedia

   en.wikipedia.org/wiki/Green_Dot_Corporation

   Download QR code; Wikidata item; Print/export ... [25] The card was founded in 2013, ... This is a Visa card that is secured by a deposit, and is not a debit card nor ...

4. Mir (payment system) - Wikipedia

   en.wikipedia.org/wiki/Mir_(payment_system)

   The Mir card was the key part of Russia’s strategy to build its own payment system. The country aimed to operate local payments and clearing operations independently from foreign companies such as MasterCard and Visa. [33] The Mir card came into effect in 2015. Initially it was adopted slowly by Russian banks and consumers.

5. 3-D Secure - Wikipedia

   en.wikipedia.org/wiki/3-D_Secure

   3-D Secure is a protocol designed to be an additional security layer for online credit and debit card transactions. The name refers to the "three domains" which interact using the protocol: the merchant/acquirer domain, the issuer domain, and the interoperability domain.

6. QR code - Wikipedia

   en.wikipedia.org/wiki/QR_Code

   The QR code system was invented in 1994, at the Denso Wave automotive products company, in Japan. [5] [6] [7] The initial alternating-square design presented by the team of researchers, headed by Masahiro Hara, was influenced by the black counters and the white counters played on a Go board; [8] the pattern of position detection was found and determined by applying the least-used ratio (1:1:3 ...

7. Visa Debit - Wikipedia

   en.wikipedia.org/wiki/Visa_Debit

   Numerous banks issue Visa-branded debit cards linked to accounts. Some issuing banks call their cards "Visa check cards". [25] Cards allow for purchases at any merchant where any type of Visa card is accepted. Transactions are processed one of three ways. A signed transaction is processed through the regular Visa credit network. [25]