What is an authenticator app?
Last updated: 31 October 2026 · The MargenOptimierer app is in German. Button and menu names are shown exactly as you see them, with the English meaning in brackets.
An authenticator app is an app on your phone that shows you a six-digit code for signing in.
You connect it to MargenOptimierer once by scanning a QR code. After that, you enter the code the app is showing as well as your password when you sign in. Any authenticator app works, for example Google Authenticator, Microsoft Authenticator or 1Password.
Example: Signing in with the code from the app
Say you sign in with a password and MargenOptimierer asks for the code while the app is showing 418 207. You then type the six digits 418207.
What applies with a new phone
New phone
If you no longer have your phone, sign in with a recovery code and then set up the app again.
Next
- How do I set up two-factor sign-in?
Where this term appears
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