Definition of card reader in English:

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card reader

noun

1An electronic sensor that reads a magnetic strip or bar code on a credit card, membership card, etc.
Example sentences
  • The card reader read data from badges and any pin number data entered at a keypad of the reader.
  • The suspects are believed to have inserted a magnetic card reader into a machine at Pitsea, allowing them to record details of cards placed into them.
  • In the ID card reader is a microchip that describes the information accessible to this reader.
2An electronic device that reads and transfers data from various portable memory storage devices.
Example sentences
  • The ideal player would offer a a 20GB hard drive, good musical sound quality, a superb screen with which to view photos and a memory card reader to transfer them with.
  • If you like portable storage, Lucky Star has a three-in-one USB pen device juiced with card reader support for Secure Digital and Multi Media Card portable memory formats.
  • The question is all the more relevant since many of these devices also have a document feeder, a memory card reader, a color fax, etc.
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