Two-factor authentication is a security feature that protects your CO3 account besides your password. When you set up two-factor authentication, you will be prompted for a unique login code each time you confirm your login attempt.
To set up, you'll need a smartphone or tablet that already has the free Google Authenticator or similar authentication app installed. This software generates an one-time passcode to confirm your login.
How to enable and manage two-factor authentication?
If user password and single-use access code are successfully verified, two-factor authentication is activated for the user. You will also be prompted to enter the one-time password generated by the app when you log in to the account and enter your username and password.