ID card only records the card number, the card number in the card reading without any authority, easy to imitate. ID card can not write data, its record content (card number) can only be written by the chip production factory once, the developer can only read out the card number to use, can not be based on the actual needs of the system to develop a new number management system.
IC card data recorded in the permission, write are required to the corresponding password authentication, even each area of the card are different password protection, comprehensive protection of data security, IC card write data password and read data password can be set to different, provide a good grouping management method to ensure system security. IC card can not only authorize the user to read a large amount of data, but also by the authorized user to write a large amount of data (such as new IC card not only can authorize the user to read out a large amount of data, but also can be written by the authorized user to a large amount of data (such as new card number, user rights, user information, etc.).
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