2-step verification adds an extra layer of security to your Google Account
In addition to your username and password, you'll enter a code that Google will send you via text or voice message upon signing in.
Why you should use 2-step verification
2-step verification drastically reduces the chances of having the personal information in your Google account stolen by someone else. Why? Because hackers would have to not only get your password and your username, they'd have to get a hold of your phone.