Due to legal reasons we are unable to provide a password to our new users. As a solution we automatically generate a password we don't share and have the users "reset" their password through Microsoft Online's password reset.
The idea was to synchronize the %mobile% attribute to our Azure AD as the authentication method so no manual input is necessary, but I can't find an option for authentication methods anywhere in the Synchronization Rules Editor or Microsoft's own documentation on this. There's numerous options for telephone numbers, though none of these seem linked to the option for authentication methods.
Could anyone point me towards what option would allow me to configure this setup, if possible at all?