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2. 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 ...

3. Punched card input/output - Wikipedia

   en.wikipedia.org/wiki/Punched_card_input/output

   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. A computer card punch is a computer output device that punches holes in cards. Sometimes computer punch card readers were combined with computer card punches and ...

4. CompactFlash - Wikipedia

   en.wikipedia.org/wiki/CompactFlash

   CompactFlash (CF) is a flash memory mass storage device used mainly in portable electronic devices. The format was specified and the devices were first manufactured by SanDisk in 1994. [ 3 ] CompactFlash became one of the most successful of the early memory card formats, surpassing Miniature Card and SmartMedia.

5. Radio-frequency identification - Wikipedia

   en.wikipedia.org/wiki/Radio-frequency_identification

   Radio-frequency identification (RFID) uses electromagnetic fields to automatically identify and track tags attached to objects. An RFID system consists of a tiny radio transponder called a tag, a radio receiver, and a transmitter. When triggered by an electromagnetic interrogation pulse from a nearby RFID reader device, the tag transmits ...

6. SD card - Wikipedia

   en.wikipedia.org/wiki/SD_card

   The Secure Digital Ultra Capacity (SDUC) format supports cards up to 128 TB [ b ] and offers speeds up to 985 MB/s. In April 2024, Western Digital (SanDisk) revealed the world's first 4 TB SD card at NAB 2024, which will make use of the SDUC format. It is set to release in 2025.

7. Contactless smart card - Wikipedia

   en.wikipedia.org/wiki/Contactless_smart_card

   A contactless smart card is a contactless credential whose dimensions are credit card size. Its embedded integrated circuits can store (and sometimes process) data and communicate with a terminal via NFC. Commonplace uses include transit tickets, bank cards and passports. There are two broad categories of contactless smart cards.