Temporary Access Pass is an option that allows users to sign in with strong authentication without using the Microsoft Authenticator app. Temporary Access Pass is now in preview. This video walks through the process of configuring the Temporary Access Pass policy then creates a pass for a user and on-boards the user for Passwordless Authentication with a USB token.
Hybrid Identity with Windows AD and Azure AD https://www.udemy.com/course/hybrid-identity-and-azure-active-directory/?referralCode=7F62C4C6FD05C73ACCC3
Yubico Yubikey https://www.pntrs.com/t/TUJGR0dNRkJHSkZOTE5CRk5GSkxK