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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]
A card security code ( CSC; also known as CVC, CVV, or several other names) is a series of numbers that, in addition to the bank card number, is printed (but not embossed) on a credit or debit card. The CSC is used as a security feature for card not present transactions, where a personal identification number (PIN) cannot be manually entered by ...
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.
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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 ...
A personal identification number ( PIN ), PIN code, or sometimes redundantly a PIN number, is a numeric (sometimes alpha-numeric) passcode used in the process of authenticating a user accessing a system. The PIN has been the key to facilitating the private data exchange between different data-processing centers in computer networks for ...
Accepted payment methods. Credit or debit cards. American Express. Visa (credit or debit) Discover (credit or debit) MasterCard (credit or debit) PayPal (for most online purchases) Direct debit is no longer available for active accounts, however, it can be used to pay past due balances, with a $7 fee.
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 ...