It's an extra step, but it's one that significantly improves the security of your Google Account because it requires the powerful combination of both something you
know—your username and password—and something that only you should
have—your phone. A hacker would need access to both of these factors to gain access to your account. If you like, you can always choose a "Remember verification for this computer for 30 days" option, and you won't need to re-enter a code for another 30 days. You can also set up one-time
application-specific passwords to sign in to your account from non-browser based applications that are designed to only ask for a password, and cannot prompt for the code.
To learn more about 2-step verification and get started, visit our
Help Center. And for more about staying safe online, see our ongoing
security blog series or visit
http://www.staysafeonline.org/. Be safe!