Google Authenticator is an Android-based application that implements two-step verification services.
You can search for “Google Authenticator” in the Google Play Store, or a supporting app market, to install this app. Alternatively, you can scan the QR code in this section.
Open Google Authenticator and select the Set up account option in the menu in the top-right corner.
Select Scan a barcode and then scan the barcode generated on the MFA binding page.
After scanning the code, you will see the window as shown in the following figure that displays your account name and MFA key.
On the MFA page, enter the two consecutive MFA codes and then click Confirm to bind to bind the authenticator.