> For the complete documentation index, see [llms.txt](https://enterprise.hideez.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://enterprise.hideez.com/use-cases/hideez-authenticator-mobile-app/using-hideez-authenticator-as-an-otp-generator-for-your-two-factor-authentication.md).

# OTP generation by Hideez Authenticator App for 2FA

Hideez Authenticator allows user to generate One-Time Passwords for [Two-Factor Authentication](https://fidoalliance.org/specs/u2f-specs-master/fido-u2f-overview.html) mechanism.

To use OTP generation feature first you have to [enroll your Hideez Authenticator on HES](/use-cases/hideez-authenticator-mobile-app/using-hideez-authenticator-as-your-two-factor-authentication-method-for-sso.md).

## Set up two-factor authentication for your Gmail account

### Step 1: Enable two-factor authentication according to [Google’s instructions](https://support.google.com/accounts/answer/1066447?hl=en\&co=GENIE.Platform%3DAndroid\&oco=0). 

### Step 2: Open a secret key to generate OTP passwords in the account data.

To do this, go to account editing mode and 

**OR** 

when setting up Google Authenticator, click **CAN'T SCAN IT?**\
  

![](/files/-MA61y7IK1RvRmUq_gFA)

<figure><img src="/files/5zy0YJGCV9rA9NvTTgbL" alt=""><figcaption></figcaption></figure>

### Step 3: Add OTP account

You can add an OTP secret either by scanning a QR code or manually.

1. Open the "Accounts" section.\
   \
   ![](/files/eYP79YcUFxCJWkxCZlTs)<br>
2. Tap the "+" button.\
   \
   ![](/files/mAt7bkM6YfDU53BBghFK)<br>
3. Then you can either scan QR code from the Google account settings or enter it manually:<br>
   * Scan a QR code:\
     \
     ![](/files/iUMw8EcthWOEGhAk4jjb)<br>
   * Tap "Add manually" button:\
     \
     ![](/files/7Rr4XuOVl146zOTB57XZ)\
     \
     Type the account name and secret key in the corresponding fields.\
     \
     ![](/files/msPwIUHjBGeFvcX2z2bO)\
     \
     You also can provide advanced parameters such as a OTP length, Hash Algorithm and valid period. Just switch the "Advanced options" trigger to set them up.\
     \
     ![](/files/J6ZaRbogtaMGfqmLEjjg) ![](/files/x8d7RvPSMu26gNK12qgO)\
     \
     Tap the "Add" button.\
     \
     ![](/files/L401ljV6ZazXK7KYFuhi)

### Step 4: Confirm OTP in your Google account

1. Then click on the **Next** button. Enter OTP that is displayed in Hideez Authenticator, "Accounts" section.\
   \
   ![](/files/BG4ItjW2A0HpgVEQ9e08) ![](/files/CuIztL4YWD40koZPnHIZ)<br>
2. Click **Verify**.\
   \
   ![](/files/SYEHN0Qj7rCrIRD3VYi2)

## Sign in to your Gmail account with two-factor authentication

### Step 1: Visit the <https://mail.google.com/> account login page

### Step 2: Enter your credentials (login and password)

### Step 3: Choose Google Authenticator app second-factor authentication method

Indicate whether you want to always pass two-factor authentication on this computer or not - clear or leave the checkbox **Don’t ask again on this computer** and also select **Try another way** and **Get a verification code from the Google Authenticator App:**

<figure><img src="/files/mHaQtRvThMFATEsVxa6O" alt=""><figcaption></figcaption></figure>

<figure><img src="/files/iehyVtVUzO5YthmrDbpv" alt=""><figcaption></figcaption></figure>

### **Step 4: Enter OTP code**

Enter OTP that is displayed in Hideez Authenticator, "Accounts" section and click the **Next** button.\
\
![](/files/BG4ItjW2A0HpgVEQ9e08) ![](/files/LKmH5ETPcKBI9cqe5RrJ)

You can find more on OTP generation in Hideez Authenticator - [*iOS*](https://authenticator.hideez.com/user-guide/ios-guide/otp-generation), [*Android*](https://authenticator.hideez.com/user-guide/android-guide/otp-generation).