Two-factor authentication is optional for every customer account. That includes Management Admins and everyone else in a company or on a yacht. None of them are ever forced to set it up.
The only accounts that must have it are Nauticare's own administrator accounts, which the Nauticare team uses to run the service. If one of those accounts has no method turned on, entering the password leads to a screen titled Setup two-factor authentication instead of the app:
As an administrator, you must enable two-factor authentication to continue.
If you see this screen and you are not on the Nauticare team, contact Nauticare support.
Getting through the screen
There are two buttons, Use an authenticator app (recommended) and Use email verification. Once you enter the code for the method you chose, that method is turned on and the sign-in finishes, so you do not have to sign in again.
- Authenticator app: scan the QR code (or copy the key from Can't scan? Enter the key manually), press Continue, then enter the current 6-digit code and press Verify and Enable.
- Email verification: a 6-digit code is emailed to you. Enter it and press Verify and Enable.
A wrong code shows "Invalid code. Please try again." If the screen shows "Could not start setup. Your session may have expired.", the sign-in has most likely timed out. You have 15 minutes from entering your password to finish setup. Press Back to login and sign in again.
On these accounts, you cannot turn off the last remaining method. On Account → Security and Privacy, the note reads "As an administrator, at least one method must be enabled.", and the Disable button is greyed out while only one method is on.