Q: what if a fire destroys all my trusted devices

Hey dt..!

In the article you linked, I found this information about two-step verification for your Apple ID:

Apple ID: Frequently asked questions about two-step verification for Apple ID

http://support.apple.com/kb/HT5570

What do I need to remember when I use two-step verification?

Two-step verification simplifies and strengthens the security of your account. After you turn it on, there will be no way for anyone to access and manage your account at My Apple ID other than by using your password, verification codes sent your trusted devices, or your Recovery Key. You must be responsible for:

• Remembering your password.
• Keeping your trusted devices physically secure.
• Keeping your Recovery Key in a safe place.

 

If you lose access to two of these three items at the same time, you could be locked out of your Apple ID account permanently.

In addition, with two-step verification turned on, only you can reset your password, manage your trusted devices, or create a new recovery key.

Apple Support can help you with other aspects of your service, but they will not be able to update or recover these three things on your behalf.

So I would recommend that you keep your Recovery Key in a secure location to prevent this scenario. Thanks for being a part of the Apple Support Communities!

Regards,

Braden