The FIDO Alliance has produced three sets of specifications – FIDO2, Universal Authentication Framework (UAF), and Universal 2nd Factor (U2F), and full information on these specifications is available on the FIDO website Specifications section. Products wishing to leverage these specifications can submit to a certification process in order to show compliance with the FIDO protocols and interoperability with solutions from other FIDO members. Information and a full list of certified products can be found here.
Nok Nok is a founding member of the FIDO Alliance and is proud to support its objectives. The Nok Nok S3 Authentication Suite solutions, including the Nok Nok Authentication Server, the Nok Nok Authentication SDK, the Nok Nok App SDKs, and the Nok Nok Authenticator SDKs are FIDO Certified™ solutions for the FIDO UAF, U2F, and FIDO2 protocols. Nok Nok provides testing infrastructure used in FIDO certification to ensure conformance with the FIDO2, Universal Authentication Framework (UAF), and Universal 2nd Factor (U2F) specifications.