Open **Personal Data** in the user menu and switch to the **Security** tab for additional protection of the login.


- **Two-factor authentication:** Select **Enable two-factor**, link an authenticator app, and confirm the setup with the generated code.
- **Passkeys:** Select **Set up passkey** on a supported device and browser, confirm using Face ID, Touch ID, Windows Hello, or a Securitysschlüssel, then give the device a name. You can **Add another passkey** later.
- **Active devices & sessions:** Check which devices your account is signed in to. Select **Sign out** for a single session or **Sign out all other devices**.
- **Login activity:** Check suspicious logins. The login history is automatically deleted after 90 days.


If a passkey doesn't work on a device, sign in with your password and, if applicable, 2FA and manage the passkey in the Securityseinstellungen. Don't remove a passkey that works until at least one other secure sign-in option is available. If you've lost access to your authenticator app, contact support@medical-id.org.


[Open Securityseinstellungen](https://app.medical-id.org/account-settings#security)