First, turn on two-factor authentication for the account. You'll get a QR code or setup key. Next, open the Google Authenticator app and tap the plus sign. Record the 2FA code/key. Whenever you're ...
来自MSN

Google Authenticator

Google Authenticator takes the hassle out of protecting your online accounts with multi-factor authentication (MFA). It's free, and if you have a Google account, setting up and transferring codes is ...
Unlike the traditional method of using only a single password, two-step authentication provides greater security for your accounts by requiring two steps to log into ...