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2. 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

3. 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.

4. QR code - Wikipedia

   en.wikipedia.org/wiki/QR_Code

   The QR code system was invented in 1994, at the Denso Wave automotive products company, in Japan. [5] [6] [7] The initial alternating-square design presented by the team of researchers, headed by Masahiro Hara, was influenced by the black counters and the white counters played on a Go board; [8] the pattern of position detection was found and determined by applying the least-used ratio (1:1:3 ...

5. 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 ...

6. 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 ...

7. Google Pay (mobile app) - Wikipedia

   en.wikipedia.org/wiki/Google_Pay_(mobile_app)

   RuPay card users can now make payments even easier using Google Pay's Tap & Pay feature. With the use of this technology, customers may use Google Pay to link their RuPay cards and pay with just a tap of their phone at a card reader. The 16-digit card number is safeguarded during transactions thanks to the secure storage of the card details.