Google Authenticator is a free OTP "One Time Password" service which adds an extra layer of protection your your SkyCrypt protected files.
To enable Google Authenticator, go into SafeCrypt settings and enable Google Authenticator, once you do that the configuration page will pop up and you will be able to set up your Google Authenticator to work with SafeCrypt.
In order to login to your SkyCrypt drives, you will require two forms of authentication, your SkyCrypt password and your mobile device running Google Authenticator.
Google Authenticator is provided and supported by Google. You can download the mobile app for IOS, Android and Blackberry - HERE