I'm not 100% certain, but when I setup 2FA for many services they give you ~10 single use emergency codes that you can use to get into the system in the event t

I'm not 100% certain, but when I setup 2FA for many services they give you ~10 single use emergency codes that you can use to get into the system in the event that your second factor is unavailable for whatever reason (phone stolen, you are out of the country, fido broke, etc.)