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2. 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.

3. Form factor (mobile phones) - Wikipedia

   en.wikipedia.org/wiki/Form_factor_(mobile_phones)

   A slider is composed of usually two, but sometimes more, sections that slide past each other on rails. Most slider phones have a display segment which houses the device's screen, while another segment contains the keypad or keyboard and slides out for use.

4. 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.

5. List of open-source mobile phones - Wikipedia

   en.wikipedia.org/wiki/List_of_open-source_mobile...

   Phones natively running these are included. There are multiple projects to implement mainline Linux on mobile phones. Mobian is an open-source project focusing on Debian GNU/Linux on mobile devices. [12] postmarketOS is based on the Alpine Linux. [13] Arch Linux ARM based Manjaro is focusing on PinePhone hardware. [14]

6. Contactless payment - Wikipedia

   en.wikipedia.org/wiki/Contactless_payment

   EMV contactless symbol used on compatible payment terminals. EMV stands for "Europay, Mastercard, and Visa", the three companies that created the standard.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 ...

7. 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 ...