# Two-Factor Authentication (2FA)

### What is 2FA? <a href="#what_is_2fa" id="what_is_2fa"></a>

{% hint style="info" %}
For increased security, [Loopring Smart Wallet](/loopring-smart-wallet.md) allows users to enable 2FA. This ensures the owner of the wallet is the only person able to access it.
{% endhint %}

2FA requires 2 methods of authentication from the various factors of authentication listed:

1. Signature Auth
2. SMS Authentication
3. Email Authentication
4. Authenticator App

It's important to note that once you enable 2FA, you can't switch back to 1FA. As a result, it is highly recommended to use 3 different authentication methods to ensure that your wallet remains fully secure and accessible if you lose access to an authentication method.

### What can I do with 2FA? <a href="#what_can_i_do_with_2fa" id="what_can_i_do_with_2fa"></a>

Once enabled, users will have the ability to change the mobile phone number or email address associated with their wallet (Official Loopring Guardian). With 2FA enabled, users will be required to enter the 2FA verification code when recovering their wallet or changing the account passcode.


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