Capacity of 8Kbit EEPROM, divided into 16 секторів, кожен сектор 4 частина, each 16 байтів, 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 …