Temporary access pass (TAP) is now generally available. Temporary access pass can be used to securely register passwordless methods such as phone sign-in, phishing resistant methods like FIDO2, and can even assist in Windows onboarding (Azure AD Join and Windows Hello for Business). Temporary access pass makes recovery easier when you have lost or forgotten your strong authentication methods and need to sign in to register new authentication methods.
Learn more: Configure temporary access pass in Azure AD