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.

Azure AD Certificate-based Authentication (CBA) on Mobile - Microsoft Community Hub

Yubico Authenticator App for Desktop and Mobile

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

Microsoft MFA, YubiKeys

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

Versasec - Mobile Certificate-based Authentication with Microsoft, YubiKeys, and Versasec

Azure AD Certificate-Based Authentication Launches on Mobile

Microsoft and Yubico Preview Certificate-Based Authentication for Mobile Devices Using Security Keys

Azure AD Certificate-Based Authentication Now Available on Mobile

Microsoft's Certificate-Based Authentication Enables Phishing-Resistant MFA

Stina Ehrensvard on LinkedIn: The Strongest Protection for Your Online Accounts? This Little Key

YubiKey Multi-Factor Authentication Configuration Guide