Google Authenticator is a Mobile App that you download to your Android or Apple device found in your App Store.
Once setup it enables you to use 2FA (Two-Factor Authentication) on a number of website and web applications that use it.
This adds an extra layer of security for you, the user.
At NestEgg we use 2FA to allow you to recover your NestEgg file should you lose it or should it become corrupted.
Please note that to recover the contents of your NestEgg file you would need to have a paid account. This is a technical limitation and not a policy decision sorry.