Certificate-based authentication with YubiKeys on iOS and Android

YubiKey is the sole external device supporting Azure AD Certificate-based authentication (CBA) on Android and iOS.

Certificate-Based Authentication (CBA) on mobile using a YubiKey, by Jonas Markström

Azure AD Certificate-Based Authentication (CBA) on Mobile now Generally Available! - Microsoft Community Hub

Tech Solvency: YubiKeys

Setting Up Two-factor Authentication - YubiKey

WebAuthn Web Authentication with YubiKey 5

Why Windows Hello for Business, Microsoft Authenticator, and FIDO2 are not a suggestion, but a requirement for your Azure AD powered enterprise – PART 2

Azure AD Certificate-Based Authentication Launches on Mobile

Client Certificate Authentication – text/plain

Azure AD Certificate-Based Authentication Now Available on Mobile

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