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. The YubiKey is a hardware authentication device manufactured by Yubico to protect access to computers, networks, and online services that supports one-time passwords (OTP), public-key cryptography, and authentication, and the Universal 2nd Factor (U2F) and FIDO2 protocols developed by the FIDO Alliance. First YubiKey USB token of the FIDO standard in 2014.
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