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2. Credit card imprinter - Wikipedia

   en.wikipedia.org/wiki/Credit_card_imprinter

   Credit card imprinter. Manual card imprinter. A credit card imprinter, colloquially known as a ZipZap machine, click-clack machine or Knuckle Buster, is a manual device that was used by merchants to record credit card transactions before the advent of payment terminals. [ 1]

3. Payment terminal - Wikipedia

   en.wikipedia.org/wiki/Payment_terminal

   PAX Technology S90 credit card terminal with a Visa card inserted.. A payment terminal, also known as a point of sale (POS) terminal, credit card machine, card reader, PIN pad, EFTPOS terminal (or by the older term as PDQ terminal which stands for "Process Data Quickly" [1]), is a device which interfaces with payment cards to make electronic funds transfers.

4. Contactless payment - Wikipedia

   en.wikipedia.org/wiki/Contactless_payment

   Contactless payment systems are credit cards and debit cards, key fobs, smart cards, or other devices, including smartphones and other mobile devices, that use radio-frequency identification (RFID) or near-field communication (NFC) for making secure payments. The embedded integrated circuit chip and antenna enable consumers to wave their card ...

5. Pay at the pump - Wikipedia

   en.wikipedia.org/wiki/Pay_at_the_pump

   Pay at the pump. Pay at the pump is a system used at many filling stations, where customers can pay for their fuel by inserting a credit card, debit card, or fuel card into a slot on the pump, bypassing the requirement to make the transaction with the station attendant or to walk away from one's vehicle. A few areas have gas stations that use ...

6. Authorization hold - Wikipedia

   en.wikipedia.org/wiki/Authorization_hold

   Authorization hold (also card authorization, preauthorization, or preauth) is a service offered by credit and debit card providers whereby the provider puts a hold of the amount approved by the cardholder, reducing the balance of available funds until the merchant clears the transaction (also called settlement), after the transaction is completed or aborted, or because the hold expires.

7. Mastercard - Wikipedia

   en.wikipedia.org/wiki/Mastercard

   Mastercard Inc. (stylized as MasterCard from 1979 to 2016, mastercard from 2016 to 2019) is an American multinational payment card services corporation headquartered in Purchase, New York. [ 3] It offers a range of payment transaction processing and other related-payment services (such as travel-related payments and bookings).