Choose an authenticator.
There are many options when it comes to two-factor authentication. The most popular options include apps that can be downloaded to your smartphone from your app store, like LastPass Authenticator, Google Authenticator, or Authy. LastPass supports many two-step authentication apps.
Enable it for your accounts.
Many websites and apps, including banks, social media, email, password managers, and more, offer the option to turn on two-factor authentication. In your Firefox account settings under Manage Account, look for security options and turn on two-factor authentication. Hit the enable button, then select your chosen two-factor authentication app for your account.
Log in with extra protection.
The next time you log in to the account, you’ll enter your password and be asked for your two-factor authentication, too. Enter the code from the app on your phone or tap the approval message sent to your smartphone.