Once 2-Step Verification has been completed on your account, you will have to log in to it using both your password and verification code that Google Authenticator app will give you.

If you forget your code, you turn off two-step verification through an email address registered with the app. Users who forget their passcode and don't register an email address will still be able ...

How do you handle 2-step verification with email software, whether it’s a Windows program or an Android or iOS app? [Have a tech question? Ask PCWorld Contributing Editor Lincoln Spector.