„1Password and 2FA: Is it wrong to store passwords and one-time codes together?“
But there’s an incredibly specific (and unlikely) scenario in which storing your TOTP in a separate authenticator app may offer additional protection. If an attacker got ahold of your 1Password login information (and your 2FA secret if you’ve added that layer of protection to your 1Password account) but didn’t have control of your device, the separation between your passwords and TOTP could prove useful.
Kurzum: Für Einmalpasswörter benötigt ihr keine separate Authenticator-App.