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2. Octopus card - Wikipedia

   en.wikipedia.org/wiki/Octopus_card

   The mobile app is able to receive funds by tapping the passenger's Octopus card to the device's Near-field communication (NFC) reader, or by allowing passengers to scan a QR code. [ 43 ] In October 2020, Octopus Cards Limited launched Octopus Mobile POS, a more compact version of the Octopus reader to help taxi drivers and small- and medium ...

3. Business card - Wikipedia

   en.wikipedia.org/wiki/Business_card

   An attorney's business card, 1895 Eugène Chigot, post impressionist painter, business card 1890s A business card from Richard Nixon's first Congressional campaign, in 1946 Front and back sides of a business card in Vietnam, 2008 A Oscar Friedheim card cutting and scoring machine from 1889, capable of producing up to 100,000 visiting and business cards a day

4. Punched card - Wikipedia

   en.wikipedia.org/wiki/Punched_card

   A punched card (also punch card [1] or punched-card [2]) is a piece of card stock that stores digital data using punched holes. Punched cards were once common in data processing and the control of automated machines .

5. Punched card input/output - Wikipedia

   en.wikipedia.org/wiki/Punched_card_input/output

   An IBM 80-column punched card of the type most widely used in the 20th century IBM 1442 card reader/punch for 80 column cards. A computer punched card reader or just computer card reader is a computer input device used to read computer programs in either source or executable form and data from punched cards.

6. Square (financial services) - Wikipedia

   en.wikipedia.org/wiki/Square_(financial_services)

   Square Reader also supports Apple Lightning on post-2018 products. Neither card numbers, nor magnetic stripe data, nor security codes are stored on Square devices. [19] Square Reader is Payment Card Industry Data Security Standard compliant and Verisign certified. [19] Square provides its magnetic stripe card readers to sellers without charge. [42]

7. Radio-frequency identification - Wikipedia

   en.wikipedia.org/wiki/Radio-frequency_identification

   An Active Reader Passive Tag (ARPT) system has an active reader, which transmits interrogator signals and also receives authentication replies from passive tags. An Active Reader Active Tag (ARAT) system uses active tags activated with an interrogator signal from the active reader. A variation of this system could also use a Battery-Assisted ...