ID Unit is a crypto coprocessor that incorporates the ATECC608B hardware cryptographic chip. It is designed to provide secure key storage and cryptographic functionalities for various applications. ID Unit utilizes the I2C communication interface for data exchange and control.

The ATECC608B chip integrated into the ID Unit features hardware-based secure key storage. It includes a built-in 10Kb EEPROM (Electrically Erasable Programmable Read-Only Memory) for storing keys, certificates, data, consumption records, and security configurations. The EEPROM allows for secure storage of sensitive information, protecting it from unauthorized access or tampering.