Magnetic stripe card is a liquid magnetic material or magnetic stripe as the information carrier, the liquid magnetic material coated on the card (such as Passbook) or a width of about 614mm magnetic stripe pressure affixed to the card (such as the common UnionPay card). 

Magnetic stripe card is generally used as identification card, can write, store, rewrite information content, characterized by strong reliability, record data density, low misreading rate, information input, readout speed. Because of the relatively simple and easy to read and write information, easy to use, low cost, so that the earlier development, and entered a number of application areas.