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Chip cards, also known as IC cards, can be divided into two types, one is contact chip cards, and the other is contactless chip cards. There are chips on the surface of contact chip cards, such as social security cards, bank cards, etc. The appearance of contactless chip cards is no different from conventional cards, but the chip is not visible, such as ID cards, transportation cards, etc. The appearance of chip card is similar to that of magnetic card. Compared with magnetic stripe card, chip card has the advantages of good security and confidentiality and is not easy to be copied. Moreover, chip card has more and more convenient functions, such as contactless chip card can realize flash payment function, which greatly improves the convenience of payment. Some chip cards can also be made into a variety of styles, compared to ordinary magnetic stripe cards, with a more fashionable shape. In addition, the information on the chip card can be read, modified, erased, and has a long storage time, and its disadvantage is that the price is relatively high.