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Card check, also called majority sign-up, is a method for employees to organize into a labor union in which a majority of employees in a bargaining unit sign authorization forms, or "cards", stating they wish to be represented by the union. Since the National Labor Relations Act (NLRA) became law in 1935, card check has been an alternative to ...
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]
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.
Carding (fraud) Carding refers not only to payment card based fraud, but also to a range of related activities and services. Carding is a term of the trafficking and unauthorized use of credit cards. [1] The stolen credit cards or credit card numbers are then used to buy prepaid gift cards to cover up the tracks. [2]
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.
Checkers[ note 1] ( American English ), also known as draughts ( / drɑːfts, dræfts /; British English ), is a group of strategy board games for two players which involve forward movements of uniform game pieces and mandatory captures by jumping over opponent pieces. Checkers is developed from alquerque. [ 1]
A debit card, also known as a check card or bank card, is a payment card that can be used in place of cash to make purchases. The card usually consists of the bank's name, a card number, the cardholder's name, and an expiration date, on either the front or the back. Many new cards now have a chip on them, which allows people to use their card ...
ColorChecker. The ColorChecker Color Rendition Chart (often referred to by its original name, the Macbeth ColorChecker[ 1] or simply Macbeth chart[ 2]) is a color calibration target consisting of a cardboard-framed arrangement of 24 squares of painted samples. The ColorChecker was introduced in a 1976 paper by McCamy, Marcus, and Davidson in ...