In Firebase you can set up your Email authentication provider to use a passwordless method. This requires you to call the sendSignInLinkToEmail function.
I cannot see how to make this work in Flutterflow, it always wants a password field.
I see I can send an email verification link after login and wonder if this prevents the user from logging in without clicking the link in the email. If so does this work every time? Or is this a one time validation? The docs are sparse here. I probably should just test it out.