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Smart Card (Smart Card): embedded microchip plastic card (usually the size of a credit card) known. Some smart cards contain an RFID chip, so they do not need any physical contact with the reader to be able to identify the cardholder. Smart cards are equipped with CPU and RAM, can handle a large number of data on their own without interfering with the work of the host CPU. Smart cards can also filter the wrong data to reduce the burden on the host CPU. Adapt to the port number and the speed of communication needs more quickly occasions. Integrated circuits within the card include a central processing unit CPU, a programmable read-only memory (EEPROM), random access memory (RAM), and an in-card operating system (COS), which is stored in a read-only memory ROM. Card data is divided into external read and internal processing part.
     Applications
1. Financial card: also known as bank cards, but also can be divided into two kinds of credit cards and cash cards. The former for consumer spending, you can set a pre-set amount of overdraft funds; the latter can be used as an electronic wallet or electronic passbook, but not overdrawn.
2. Non-financial cards: also known as non-bank cards, covering a very wide range, including financial cards in addition to all areas, such as telecommunications, tourism, education and public transportation and so on.