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  2. Common Access Card - Wikipedia

    en.wikipedia.org/wiki/Common_Access_Card

    The common access card, also commonly referred to as the CAC, is the standard identification for active duty United States defense personnel. The card itself is a smart card about the size of a credit card. [1] Defense personnel that use the CAC include the Selected Reserve and National Guard, United States Department of Defense (DoD) civilian ...

  3. Computer programming in the punched card era - Wikipedia

    en.wikipedia.org/wiki/Computer_programming_in...

    A punched card is a flexible write-once medium that encodes data, most commonly 80 characters. Groups or "decks" of cards form programs and collections of data. The term is often used interchangeably with punch card, the difference being that an unused card is a "punch card," but once information had been encoded by punching holes in the card ...

  4. CCID (protocol) - Wikipedia

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

    CCID ( chip card interface device) protocol is a USB protocol that allows a smartcard to be connected to a computer via a card reader using a standard USB interface, without the need for each manufacturer of smartcards to provide its own reader or protocol. [1] This allows the smartcard to be used as a security token for authentication and data ...

  5. Wiegand interface - Wikipedia

    en.wikipedia.org/wiki/Wiegand_interface

    Wiegand interface. The Wiegand interface is a de facto wiring standard which arose from the popularity of Wiegand effect card readers in the 1980s. It is commonly used to connect a card swipe mechanism to the rest of an access control system. The sensor in such a system is often a "Wiegand wire", based on the Wiegand effect, discovered by John ...

  6. United States Uniformed Services Privilege and Identification ...

    en.wikipedia.org/wiki/United_States_Uniformed...

    The modern military identification card is a smart card commonly known as a Common Access Card (CAC) used by servicemembers and DoD civilians. It works with specialized card readers for use with automatic building access control systems, communications encryption, and computer access.

  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 ...

  8. Access badge - Wikipedia

    en.wikipedia.org/wiki/Access_badge

    An access badge is a credential used to gain entry to an area having automated access control entry points. Entry points may be doors, turnstiles, parking gates or other barriers. Access badges use various technologies to identify the holder of the badge to an access control system. The most common technologies are magnetic stripe, proximity ...

  9. Punched card - Wikipedia

    en.wikipedia.org/wiki/Punched_card

    Punched card. A 12-row/80-column IBM punched card from the mid-twentieth century. 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 . Punched cards were widely used in the 20th ...

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