Two-factor sign-in asks for a 6-digit code from an authenticator app (such as Google Authenticator, Microsoft Authenticator or Authy) as well as your password.
- 1Open Settings and find Two-factor authentication.
- 2In your authenticator app choose Add account, then scan the QR code - or type the key shown if you can't scan.
- 3Enter the 6-digit code your app shows to confirm.
- 4Save the recovery codes somewhere safe and offline.
Recovery codes are the way back in if you lose your phone. Store them in a password manager or print them - don't leave them only on the phone that has the app.