Two-step authentication adds extra security by making it harder for someone else to log in to your account, especially if they steal your password. When you enable two-step authentication, when someone attempts to log in to your account with your password, Firefox will also ask for a verification code from an authentication application for proof that it’s really you. =How do I enable two-step authentication?= ==Step one== Before you get started, download one of the following authentication applications: *Authy 2-Factor Authentication **[https://authy.com/download/ Windows, MacOS] **[https://play.google.com/store/apps/details?id=com.authy.authy Android] **[https://itunes.apple.com/us/app/authy/id494168017?mt=8 iOS] *Google Authenticator **[https://play.google.com/store/apps/details?id=com.google.android.apps.authenticator2 Android] **[https://itunes.apple.com/us/app/google-authenticator/id388497605?mt=8 iOS] *Duo Mobile **[https://play.google.com/store/apps/details?id=com.duosecurity.duomobile&hl=en Android] **[https://itunes.apple.com/us/app/duo-mobile/id422663827?mt=8 iOS] *FreeOTP **[https://play.google.com/store/apps/details?id=org.fedorahosted.freeotp Android] **[https://itunes.apple.com/us/app/freeotp-authenticator/id872559395?mt=8 iOS] *andOTP (Android only) **[https://play.google.com/store/apps/details?id=org.shadowice.flocke.andotp Google Play] **[https://github.com/andOTP/andOTP/releases GitHub] **[https://f-droid.org/en/packages/org.shadowice.flocke.andotp F-Droid] *KeepassXC **[https://keepassxc.org/download/#linux Linux] **[https://keepassxc.org/download/#mac MacOS] **[https://keepassxc.org/download/#windows Windows] ==Step two== Then follow these steps to set up two-step authentication in Firefox: #[[Template:optionspreferences]] #In the ''Firefox Account'' panel, click '''Manage account'''. #Expand the Two-step authentication section by clicking {button Enable…}. #Open the authentication app of your choice. #Use the app to take a photo of the QR code, or click '''Can’t Scan Code''' to display a code to enter into the app. #Enter the code generated by the app into the Firefox Accounts Two-step authentication section. #Download or print the recovery codes and keep them in a safe place in case you lose access to your authentication application. The setup of your two-step authentication is now complete!

Two-step authentication adds extra security by making it harder for someone else to log in to your account, especially if they steal your password.

When you enable two-step authentication, when someone attempts to log in to your account with your password, Firefox will also ask for a verification code from an authentication application for proof that it’s really you.

How do I enable two-step authentication?

Step one

Before you get started, download one of the following authentication applications:

• Authy 2-Factor Authentication
  • Windows, MacOS
  • Android
  • iOS
• Google Authenticator
  • Android
  • iOS
• Duo Mobile
  • Android
  • iOS
• FreeOTP
  • Android
  • iOS
• andOTP (Android only)
  • Google Play
  • GitHub
  • F-Droid
• KeepassXC
  • Linux
  • MacOS
  • Windows

Step two

Then follow these steps to set up two-step authentication in Firefox:

1. 在畫面頂端的選單列點擊 Firefox 並選擇 設定（在舊版 macOS 上選擇 偏好設定）。點擊選單按鈕 後，選擇 設定。
2. In the Firefox Account panel, click Manage account.
3. Expand the Two-step authentication section by clicking Enable….
4. Open the authentication app of your choice.
5. Use the app to take a photo of the QR code, or click Can’t Scan Code to display a code to enter into the app.
6. Enter the code generated by the app into the Firefox Accounts Two-step authentication section.
7. Download or print the recovery codes and keep them in a safe place in case you lose access to your authentication application.

The setup of your two-step authentication is now complete!