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Install Google Authenticator

If you set up 2-Step Verification using SMS text message or Voice call and also want to be able to generate codes using the Android, iPhone, or a Blackberry, you can use the Google Authenticator app to receive codes even if you don’t have an Internet connection or mobile service.

To set this up, first you need to complete SMS/Voice setup. Then, follow the directions for your type of device explained below.

Android devices

Requirements

To use Google Authenticator on your Android device, it must be running Android version 2.1 or later.

Downloading the app

  1. Visit Google Play.
  2. Search for Google Authenticator.
  3. Download and install the application.

Setting up the app

  1. If you haven’t already, complete the SMS/Voice setup and enroll your account in 2-Step Verification using your phone number.
  2. On your computer, go to the 2-Step Verification settings page and click on Android.
  3. On your mobile device, open the Google Authenticator application.
  4. If this is the first time you have used Authenticator, select Begin setup. If you are adding a new account, choose Set up account from the app's menu.
  5. To link your mobile device to your account:
    • Using QR code: Select Scan a barcode. If the Authenticator app cannot locate a barcode scanner app on your mobile device, you might be prompted to download and install one. If you want to install a barcode scanner app so you can complete the setup process, select Install, then go through the installation process. Once the app is installed, reopen Google Authenticator, then point your camera at the QR code on your computer screen.
    • Using secret key: Select Enter provided key, then enter the email address of your Google Account in the "Enter account name" box. Next, enter the secret key on your computer screen in the "Enter your key" box. Make sure you've chosen to make the key Time based, then select Add.
  6. To test that the application is working, enter the verification code on your mobile device into the box on your computer next to Code, then click "Verify."
  7. If your code is correct, you will see a confirmation message. Click "Save" to continue the setup process. If your code is incorrect, try generating a new verification code on your mobile device, then entering it on your computer. If you’re still having trouble, you might want to verify that the time on your device is correct or read about common issues.

最后更新：2017-05-23 01:39:42

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