Two-step verification

Add a check using your authenticator app.

1. In Security, start setup and add the QR code to your authenticator app.
2. Verify a code to enable this method. Displaying the QR code does not enable it yet.
3. Store recovery codes somewhere safe. They are displayed when generated.
4. Regenerating codes invalidates the old ones. At sign-in you can use one instead of an app code.