1. You can follow the instructions here to install Google Authenticator onto supported devices. For other devices and options, see below:
   • If you would like to run Google Authenticator on an Android device that doesn’t have access to Google Play Store, you can install from here.
   • If you would like to run Google Authenticator on your Windows Phone, Jamie Garside has developed Authenticator.
   • If you would like to run Google Authenticator on your webOS device, Greg Stoll has developed GAuth.
   • If you would like to run Google Authenticator on your Symbian device, or any device that supports Java ME, Rafael Beck has developed lwuitgauthj2me
   • Alternatively, Rodrigo A. Diaz Leven has developed gauthj2me.
2. Once you have the Google Authenticator application running on your mobile device, login to your LastPass Vault and go to Account Settings on the left menu > Multifactor Options > Google Authenticator.



3. Click on “View” for the barcode.
4. On your mobile device, open the Google Authenticator app.
5. Tap the + icon or “Add an Account” option (depending on your mobile device)
6. Select Scan Barcode.
7. Scan the Barcode provided from LastPass.
8. A new entry for LastPass will appear in the Google Authenticator App
9. In LastPass, toggle “Enabled” to “Yes”
10. Click Update
11. You will be asked for your Google Authenticator code. Use your Google Authenticator App to fill in the required code.

After your LastPass account is registered within the Google Authenticator app, the next time you login to LastPass on an untrusted device, you will receive the Google Authentication dialog:

Go to your Google Authenticator App and input the current authentication code you see in the app into this dialog.  If the code expires before you have a chance to authenticate, simply use the next code that appears in the app.

When multifactor authentication is enabled, you can choose whether to allow LastPass to store an encrypted vault locally so you can log in without an internet connection or not. If you enable offline access, you will be able to login without using Multifactor (with the exception of Yubikey) in case of a connectivity issue.

With some internet configurations (typically wireless connections and waking from sleep), LastPass may log in offline first before establishing connectivity to your online vault and prompting for your authenticator code.  This may cause LastPass to AutoFill any login credentials you have saved in LastPass for the current page you are on.   If you wish to disable offline access, you may do so in your account settings. In the vault, click Settings on the left navigation pane > Multifactor Options > Google Authenticator > Permit Offline Access: change it to Disallow and save the change. Note: you will need to clear LastPass local cache or re-log in online since the change so the local cache is automatically cleared.