Fast.io supports 2-Factor authentication through a rolling code powered by Authy. This feature is available at no charge to all users. After enabling 2-Factor you will need the 2-Factor code to login, and to make any destructive changes to your account, such as deleting a Site.
To setup 2-Factor, follow these steps:
Login to https://go.fast.io.
Once you're on the dashboard, goto your account settings, by clicking on your avatar at the top right corner.
Ensure you have entered a valid phone number. The number is whats tied to your 2-Factor authentication although we don't use SMS by default.
Click "Enable 2-Factor" which will start the authentication process.
You will receive a validation code to your Authy App or via SMS. Follow the steps to get a verification code.
Once you verify, 2-Factor is enabled. If you don't verify in a period of time, it will be automatically disabled.
To disable 2-Factor, click "Disable 2-Factor" and provide a 2-Factor authentication code.