The Secure 4 Click Board™ includes the ATECC608A, a secure CryptoAuthentication device from Microchip, which is equipped with an EEPROM array. The EEPROM can be used for storing up to 16 keys, certificates, consumption logging, security configurations and other types of secure data. Access to the various sections of memory can be restricted in several different ways and then the configuration can be locked permanently, to prevent changes.