Two-factor authentication (2FA) is an extra layer of security that you can enable under your Security Settings. 2FA makes it more difficult for unauthorized users to access your account. You are strongly encouraged to enable 2FA for greater security.
Sparrow platform does not support 2FA via SMS because of inherent security flaws in the SMS system.
You will need to install either Google Authenticator or Duo Authenticator app on your smartphone and use the app to scan the QR code provided under Security Settings in order to generate the six-digit code for 2FA setup. Once the setup is completed successfully, you will be required to provide the six-digit 2FA code when you log in to Sparrow, and when you are withdrawing funds.