The U2F protocol is featured on Security Key and YubiKey 5 platforms. Users looking for FIPS validation on U2F devices should choose Yubico's FIPS Series. In 2012, Yubico and Google created U2F, with validation from NXP. Jakob Ehrensvard, Yubico CTO, introduced the concept of an authenticator that can work with any number of services, with no shared secrets. The rest is history.