Best Practices for Passkeys and FIDO2 Implementation

This guide provides best practices for service providers, organizations, and individuals regarding the use of passkeys and FIDO2 protocols. It outlines the intended audiences, which include service providers, identity providers, organizations, and individuals, detailing their roles in the authentication design and authenticator selection processes. The document emphasizes the importance of understanding the differences in control each audience has over authentication methods. It also discusses the evolution of authentication options, highlighting the significance of FIDO metadata and attestation in ensuring compliance and security. The guide includes sections on frequently asked questions about passkeys, best practices for service providers, and recommendations for identity providers. Additionally, it notes that the document is a living resource, subject to updates as the security landscape changes, and encourages readers to refer back for the most current guidance.