IC cards can be divided into contact IC cards and contactless IC cards according to the type of chip. The contact IC card reads and writes the chip information through physical contact, such as financial cards, ID cards, etc. Contactless IC cards communicate with card readers through radio waves, such as bus cards, access control cards, etc. According to the different chip models, IC cards can be divided into many types, such as the commonly used AT88SC153, AT24C02, M1 card and so on. These chips have the characteristics of different storage capacity, read and write speed, security, etc., and can be applied to different fields and scenarios.