Card reader

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A memory card reader is a device used for communication with a smart card or a flash memory card. A business card reader is a scanning device used to scan and electronically save business cards. A magnetic card reader is a device used to scan cards containing magnetic data strips.

[edit] Smart card readers

See also: Contact Smart Card and Contactless Smart Card.

Smart card reader is a electronic device that reads smart cards. Some computer keyboards have a built-in card reader. There are external devices and internal drive bay card reader devices for PC. Some laptops have built-in smart card reader.

[edit] Memory card readers

A Kingston SD/MMC card reader, shown with a 24 mm US quarter coin for scale.
A Kingston SD/MMC card reader, shown with a 24 mm US quarter coin for scale.

A memory card reader is a device, typically having a USB interface, for accessing the data on a memory card such as a CompactFlash (CF), Secure Digital (SD) or MultiMediaCard (MMC). Most card readers also offer write capability, and together with the card, this can function as a pen drive.

Today card readers can be categorized into three by the type and quantity of the card slots: single card reader (e.g. 1x SD-only), multi card reader (e.g. 9-in-1) and series card reader (e.g. 4x SD only). However, there are some kinds of memory cards with USB functions that do not need the card reader, such as the Intelligent Stick memory card, which can plug directly into a USB slot.

[edit] See Also