Joost is a Developer Advocate at Yubico and a security and privacy professional with deep expertise in federated single sign-on, multi-factor authentication, FIDO, passkeys, PKI, TLS, and hardware security.
He co-designed tiqr, the open-source, standards-based multi-factor authentication solution for Android and iOS, and contributes to IRMA, the privacy-friendly identity platform. Joost is a long-time advocate for open standards including SAML 2.0, OpenID Connect, OAuth 2.0, FIDO2, and DNSSEC.