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  2. 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.

  3. CCID (protocol) - Wikipedia

    en.wikipedia.org/wiki/CCID_(protocol)

    The smallest CCID form is a standard USB dongle and may contain a SIM card or Secure Digital card inside the USB dongle. [ citation needed ] Another popular interface is a USB smart card reader keyboard , which in addition to being a standard USB keyboard, has an built-in slot for accepting a smartcard.

  4. Card reader - Wikipedia

    en.wikipedia.org/wiki/Card_reader

    A card reader is a data input device that reads data from a card-shaped storage medium and provides the data to a computer. Card readers can acquire data from a card via a number of methods, including: optical scanning of printed text or barcodes or holes on punched cards, electrical signals from connections made or interrupted by a card's punched holes or embedded circuitry, or electronic ...

  5. Credit card imprinter - Wikipedia

    en.wikipedia.org/wiki/Credit_card_imprinter

    Manual card imprinter Another type of manual card imprinter (Janome M220) with a smaller sliding handle. 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.

  6. Best Buy joins retailers warning that shoppers are struggling ...

    www.aol.com/finance/best-buy-joins-retailers...

    The electronics retailer isn't alone in dropping a credit card warning. Macy's ( M ) said last week that its second quarter credit card sales tanked 36% from the prior year to $150 million.

  7. Chip Authentication Program - Wikipedia

    en.wikipedia.org/wiki/Chip_Authentication_Program

    In all three modes, the CAP reader asks the EMV card to output a data packet that confirms the cancellation of a fictitious EMV payment transaction, which involves the details entered by the user. This confirmation message contains a message authentication code (typically CBC-MAC / Triple DES ) that is generated with the help of a card-specific ...