The issue I have with 2FA without sms is that I need to also take care of recovery codes. Basically, it's like erasing all the benefits of going digital, since now I have to store (and take care of) paper copies of recovery codes.

If I use a 2FA app like the Google one and lose my phone, I need to have the codes ready. If I were to use my phone number, I kind of don't need that since I just get a new sim and a new phone. But at the same time that is not safe now.

So what is the solution here? I liked the idea of something like DUO but not enough places use it.