Capacity of 8Kbit EEPROM, divided into 16 sectors, ko e konga takitaha ʻoku 4 konga, each 16 bytes, 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 …