Once you receive the verification code to your phone, you can enter it into a login page for a Google service to get access to your account. After you select which option you would like to choose ...

First, turn on two-factor authentication for the account. You'll get a QR code or setup key. Next, open the Google ...

Google will then ask you if it should send a verification code to your registered phone number. Click Send . Retrieve the code from your messages, enter it in the textbox, and click Next .

Google's QR code experiment seems to have been concluded, with a promise of new security features to come. The method was similar to Google's two-step log-in process introduced in February 2011.