Set up Authenticator
  1. On your Android device, go to your Google Account.
  2. At the top, tap the Security tab. If at first you don't get the Security tab, swipe through all tabs until you find it.
  3. Under "You can add more sign-in options," tap Authenticator. ...
  4. Tap Set up authenticator. ...
  5. Follow the on-screen steps.
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How do you use Google Authenticator step by step?

Google Authenticator set up guide

1
Download the app from the App Store or the Google Play Store.
2
Log into your Google account online accounts.google.com.
3
Select the Security tab from the left hand menu.
4
Scroll down to the Signing in to Google section.
5
Click on > to the right of 2-step verification.
6
Select Get Started.
How does Google Authenticator work?
The Google Authenticator app is based on the time-based one-time password algorithm specified in the Internet Engineering Task Force's (IETF) RFC 6238. The TOTP algorithm generates a six-digit passcode that factors in the current time of day to ensure that each passcode is unique.
Where do I get the QR code for Google Authenticator?
In your Google account settings, go to the 2 step verification section and select the Authenticator app. Click the + Set up authenticator button and a QR code will pop up.
How do I get the 6 digit code for Google Authenticator?
If you select “Scan a barcode,” your phone's camera will activate. Hold your phone close to the screen to allow the camera to capture the QR code. 4. When the QR code or manual code has processed, Google Authenticator will generate a six-digit verification code and display it.
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