The backup plan is mostly having a backup key. The whole point is that there's a secret inside the key that can't be stolen, and that means there's no way of ex

The backup plan is mostly having a backup key. The whole point is that there's a secret inside the key that can't be stolen, and that means there's no way of exporting it either. Most services I deal with allow registering multiple keys. Some like Paypal don't, but allow having both a key and TOTP so you can use TOTP as a fallback. For convenient TOTP, you can try this one: https://www.themooltipass.com/ https://www.themooltipass.com/ It mostly acts as a keyboard (bluetooth or USB). It supports TOTP, and will type it out for you. It has an internal battery and for TOTP the clock is set by the management application for it.