When you set up two-factor authentication, you get a Recovery Code to store in case you lose or are separated from your phone. You can also use more than one method of verification.
Why do I have to link my accounts?
If you have an existing company identity system you can link that account to your ³ÉÈËVRÊÓÆµ Account. Then you can sign in to ³ÉÈËVRÊÓÆµ products using your company credentials.