Two factor authentication is an authentication method that requires your account credentials be verified by your login name and password in your web browser as well as a secondary platform that is not your browser. This is meant to further secure your account from would-be attackers. BitGo uses two-factor authentication to secure all account logins as well as all wallet transactions and alterations. This is a feature we felt was necessary in keeping your account safe and your Bitcoin under your control. This section is here to provide any additional support with any issues you may be having with your two-factor authentication.