Yubico

The YubiKey is a hardware authentication device manufactured by Yubico that supports one-time passwords, public-key cryptography and authentication, and the Universal 2nd Factor and FIDO2 protocols developed by the FIDO Alliance. It allows users to securely log into their accounts by emitting one-time passwords or using a FIDO-based public/private key pair generated by the device. YubiKey also allows for storing static passwords for use at sites that do not support one-time passwords. Facebook uses YubiKey for employee credentials, and Google supports it for both employees and users. Some password managers support YubiKey. Yubico also manufactures the Security Key, a device similar to the YubiKey, but focused on public-key authentication.'