YubiKey

A hardware authentication device manufactured by Yubico that provides secure access to computers, networks, and online services. It supports various authentication protocols, including one-time passwords (OTP), public key infrastructure (PKI), and FIDO Universal 2nd Factor (U2F) and FIDO2, enhancing security by requiring physical possession of the device in addition to a password. YubiKey is primarily targeted at individuals and organizations seeking robust two-factor authentication solutions to protect sensitive information and online accounts.