n terms of function, the purpose of smart card can be classified into the following four points:
1. Identity recognition - use the embedded microcomputer system to perform mathematical calculation on the data to confirm its uniqueness.
2. Payment tool - the built-in counter is replaced by the data of currency, comp points, etc. in number font.
3. Encryption / decryption - with the rapid development of the network, the utilization rate of e-commerce has also grown significantly. Some manufacturers say that the most important thing for network consumption is the authenticity of identity, the integrity of data, the undeniability and legitimacy of transactions. With cryptography mechanisms such as DES, RSA, MD5, etc., in addition to increasing the security of cards, offline operations can also be used to reduce the network The cost of communication.
4. Information - due to the popularization of GSM mobile phone, the demand of SIM card is increasing greatly, which accelerates the development of smart card technology, and makes mobile phone extend from the original simple telephone function to today's network online function. Its information storage function makes it have a wide range of commercial applications, such as:
Personal financial records
In order to improve the loyalty of customers and attract more new customers, banks have launched various bonus programs and improved customer service system. The use of smart cards can not only achieve the function of free transfer 24 hours a day, but also reduce the time of written operation procedures for bankers and customers. At present, many banks have issued smart cards in the market, and MasterCard and visa, two major credit card groups, are about to renew their smart cards.
Once the health insurance card is IC, the personal medical records can be stored in the chip. No matter which hospital you visit, you can know the personal medical status. The doctor can immediately know the patient's medical records. The patient can also avoid the time of filling in the report form and reduce the cost of maintaining the hospital medical records. In addition, the national identity card can also be IC, and all personal identification data such as fingerprints, birthdays, personal files can be stored in chips. It can also be used as a passport, and the Singapore and Malaysia governments have begun to use it.
Access control is very important for enterprises and schools. In addition to being used as general access control management, smart cards can also store small amounts of money, cooperate with general stores for consumption, and improve the functionality of cards. For example, a British access control system manufacturer combines the functions of access control and electronic wallet by applying smart cards originally used in access control to cash machines at the same time.
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