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What is Google Authenticator? Instructions on how to use and recover the code

In this article, Blogtienao will tell you how to install and use Google Authenticator on any device and how to recover the code.

What is Google Authenticator? Instructions on how to use and recover the code

What is Google Authenticator (GA)?

  • One of the most famous security applications comes from the giant Google.
  • Generate a random code to verify the user's identity every time they log in to different services (social network accounts, exchanges, iCloud, ...)
  • A 6-digit code with a usage time of 30 seconds. Every 30 seconds the code will be refreshed. It is this feature that helps accounts be secured with the highest level.

Why use Google Authenticator?

With the current development rate of KH-KT, it is extremely easy to attack and steal an account if that account is only secured at normal levels, including the fact that your account is not secure. you are protected with two-factor authentication via SMS.

That's why in 2010, Google launched the Google Authenticator app to take security to a higher level. Since then, this application has been widely used in all circles.

And if you are a trader or holder, you probably don't want one fine day, you log into your account and find that the balance has returned to 0 right? And installing Google Authenticator for your exchange account is the first, most basic and extremely important security step for you.

Besides the security application from Google, there are a number of other two-factor authentication software such as: Lastpass Authenticator, Microsoft Authenticator, Authy, Yubico Authenticator, ... but in this article, Blogtienao only mentions Google Authenticator because this is the most popular and easiest to use application, the installation is also extremely quick and convenient.

Read more: Lesson 9: What is the Japanese candlestick pattern? How to predict price trends with candles

Instructions to install Google Authenticator

Depending on the phone you are using, choose how to get the Google Authenticator app on the Apple App Store or Google Play Store (it's free).

After downloading and reading through the initial basic instructions in the application, you will start adding your first account.

Google Authenticator - Blogtienao

Instructions for using Google Authenticator

Activate GA for gmail account 

Step 1: Access your gmail account.

Step 2: Select menu icon in the left corner of the search box > Select "settings" > Select the correct account you are logged into > Select "manage your google account"

How to use Google Authenticator

Step 3: Right below your gmail address there will be a pull bar, drag across and select “security” > In the “login to Google” section select “two-step verification” > enter your account password

How to use Google Authenticator

Step 4: Then scroll down to “set up an alternate second step” and select “Authenticator app” > Select the type of phone to receive the code and scan.

How to use Google Authenticator

***Note: There are two cases here:

  • If you've set up two-factor authentication for your gmail on a phone that doesn't have the GA app, you can scan the code at this step with your own phone with the app by selecting the "scan barcode" option in the app

How to use Google Authenticator

  • But if you set it up on your own phone that contains the GA app, you have to enter it manually by following these steps: select “cannot scan code” > write down the code provided > select “import key provided” in apps > Enter “account name” and “your key” then select “add”

How to use Google Authenticator

Step 5: After selecting "add", you will be taken back to the main screen of the application and receive a 6-digit code for your gmail, enter that code in the request section on gmail to complete the installation.

How to use Google Authenticator

Also, if you want to add a GA code for other accounts, just select the “+” sign on the main screen of the app.

Activate GA for exchange accounts

Besides gmail, activating GA for exchange accounts always seems to be an extremely important step. Blogtienao will do an example with a Binance account

Step 1: Click on “security” in the account section > Select “authenticate with Google” > Binance will ask you to download the Google Authenticator app, select “next”

Activate GA on Binance

Step 2: You will then receive a “backup key”. NOTE, PLEASE WRITE THIS KEY BECAUSE THEY WILL HELP YOU RECOVERY GOOGLE AUTHENTICATOR IN SITUATION IN CASE OF LOST YOUR PHONE. Any broker will provide you with a “backup key”.

Recovery code

Step 3: After re-entering the key that has just been provided, you just need to complete the step of entering the password and two authentication codes, the activation is complete.

Complete Authentication

Backup Code: A Detail You Can't Forget

When using GA, it is impossible not to know the backup code, because this will be the easiest way to help you restore the application if something goes wrong.

To get a backup code, you need to follow these steps:

Step 1: Follow steps 1, 2 and 3 in 4.1

Step 2: Select “Backup code” under “set up an alternate second step” > You will receive a backup code. Write them down and save them somewhere.

Backup code GA

How to recover when lost phone

How to restore gmail

Use 1 of the 10 backup codes Google has provided to restore (review the backup codes section).

How to recover GA token in exchange account

In this case, the "backup key" that the exchange provides is the fastest way for you to recover. If not, you will need to contact the broker's support team directly to reopen your account.

Here's how to restore GA with a key:

Step 1: Reload the Google Authenticator app

Step 2: Select “enter provided key” > Enter “backup key” in “your key” + the name of the exchange account you want to restore > Select “add”

Restore Google Authenticator on the exchange

After selecting “add” you are done with the restore. However, the recovery code will not have the same floor name as the original code. That's why you have to remember.

Restore Google Authenticator on the exchange


Google Authenticator is an extremely important application for those who are involved in the cryptocurrency market. Therefore, Blogtienao hopes that the above article can help you use GA more easily. Good luck!

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