Capacity of 8Kbit EEPROM, 被分成 16 行業, 每個扇區是 4 片, each 16 字節, to block access to units, each sector has its own set of password and access control, each card has a unique serial number, for 32bit, conflict prevention mechanism, support for multiple card operation. No power supply, built-in antenna, it contains encryption communication control logic …