> For the complete documentation index, see [llms.txt](https://docs.solcex.cc/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.solcex.cc/what-is-2fa.md).

# What is 2FA?

**Two-Factor Authentication (2FA)** is a security method that requires two distinct forms of verification to prove your identity when logging in or executing sensitive actions (like withdrawals).

It acts as an extra, critical layer of protection beyond just your password.

### Step-by-Step: Activating Google 2FA on Solcex

Activating Two-Factor Authentication (2FA) is mandatory for securing your assets on Solcex. This guide uses Google Authenticator (a TOTP app), which is the most widely recommended method.

#### Prerequisites

* You must have a mobile smartphone (iOS or Android).
* You must have the Google Authenticator app installed on your phone.

{% stepper %}
{% step %}

#### Initiating 2FA Setup on Solcex

* **Login to Solcex:** Log into your Solcex account via the official website (web browser recommended).
* **Navigate to Security Settings:** Go to your Account Profile and select "Account Safety"
* **Select 2FA:** Locate the **"Two-Factor Authentication (2FA)"** option and click **"Bind"** next to the Authenticator App method.

<figure><img src="/files/02tCV4HRD7if7eQgWf9N" alt=""><figcaption></figcaption></figure>
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{% step %}

#### Linking the Authenticator App

* **View the QR Code and Key:** Solcex will display a new screen showing two critical pieces of information:
  * A QR Code (Barcode): A visual code for easy scanning.
  * A Secret Key (16-Digit Alphanumeric Code): A long, manual code backup.
* **Scan the QR Code (Primary Method):**
  * Open the Google Authenticator app on your mobile phone.
  * Tap the Plus icon (+) and select "Scan a QR code."
  * Use your phone camera to scan the QR code displayed on the Solcex screen.
* **Manual Entry (Backup Method):** If scanning fails, select "Enter a setup key" in the Authenticator app and manually type in the Secret Key provided by Solcex.
* **CRITICAL STEP - SAVE THE SECRET KEY:** Immediately write down the Secret Key (the 16-digit code) on a physical piece of paper and store it in a secure, offline location (like a safe or locked box). This is your only way to recover 2FA if you lose your phone.
  {% endstep %}

{% step %}

#### Final Verification

* **Generate the Code:** Once the account is added, the Google Authenticator app will immediately start generating a 6-digit code that refreshes every 30 seconds.
* **Enter Codes on Solcex:** Return to the Solcex setup page. You will be prompted to enter:
  * The email verification code.
  * The current 6-digit code generated by the Google Authenticator app.
* **Confirm Activation:** Click "Bind”

<figure><img src="/files/kIrSujy6LXH4HtHSGfh2" alt=""><figcaption></figcaption></figure>
{% endstep %}
{% endstepper %}


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