QDID by Crypto Quantique is a physical unclonable function (PUF) semiconductor design that generates unique device identities and cryptographic keys for IoT security. It utilizes quantum tunneling current variations through the gate terminal in standard CMOS processes to create unforgeable identities based on the structural uniqueness of silicon at the point of manufacture. QDID measures and authenticates device identity at the quantum level, providing a hardware root-of-trust for IoT devices.
