Apple has two types of what might be called 2FA, two-factor and two step authentication. If memory serves, two step has a back up code that needs to be maintain

Apple has two types of what might be called 2FA, two-factor and two step authentication. If memory serves, two step has a back up code that needs to be maintained by the end user. If the user misplaces this code, the account is unrecoverable. Two factor does not have this back up code feature. When I went to the genius bar to ask about this, they said that an affected user would need to contact Apple and they would interrogate the user to confirm identity. This seemed a bit strange to me but whatever. Now with two factor I thought a code could be generated from any previously authenticated device that is El Capitan / IOS 9.3. These devices can generate codes while offline and unconnected. To generate an offline code from a Macbook, turn off WIFI then open Settings > iCloud > Account Details > Get Verification Code. To generate an offline code from an iPhone/iPad, put in airplane mode, > Settings > iCloud > tap your picture / name / Apple account icon-y think at the top > Get verification code. So when I read this article, I'm thinking to myself that myabe I know a trick that the author did not. Am I missing something?