Microsoft Authenticator is a free app that helps you sign in to all your accounts without using a password - just use a fingerprint, face recognition, or a PIN.
You can use Authenticator to sign in to your Microsoft personal, work, school or other accounts. https://support.microsoft.com/en-us/authenticator/microsoft-authenticator-faqs
You will need the App to install and use Passkeys here at UAPTC and possibly other places supporting Multi Factor Authentication methods for login to accounts.