Capacity of 8Kbit EEPROM, podzielone na 16 sektory, Każdy sektor jest 4 kawałek, each 16 bajty, 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 …