My rant with that is that the normal, regular user won't configure the fall-back solution. Nobody remembers to write down those numbers-and-codes; when they do, they don't keep it safe and leave the paper over the desk.<p>When you travel abroad, is out of battery, break your phone, etc, etc, you're 100% out of your digital life until you can overcome the 2FA limit. And this happens in the moments you need it most.