The new Google 2-Step Authentication configuration setting adds an extra layer of security to your site's administrative interface. Once set up, Freedom will send an email to existing Security users with instructions and a personalized code. An automated email will also be sent to new Security users when they are created.
When logging into Freedom with this setting turned on, users will have to use their smartphones to enter an additional code provided by Google's Authenticator app.
Learn more about Google 2-step authenticator here.