Yubikey implements the FIDO open authentication standard. Yubico, the vendor that produces the Yubikey, is a co-author of the standard. Read this for some back

Yubikey implements the FIDO open authentication standard. Yubico, the vendor that produces the Yubikey, is a co-author of the standard. Read this for some background.[1] [1] https://www.yubico.com/about/background/fido/ https://www.yubico.com/about/background/fido/