# Two-factor Authentication Settings

Two-Factor Authentication requires an additional email verification after completing ID and password authentication.

## Setting Up <a href="#id-2" id="id-2"></a>

1. Go to 'Security > Two-Factor Authentication Settings'.
   * For sub-accounts, Two-Factor Authentication can be set in 'My Account > Sub-Account Management'.
2. On the Two-Factor Authentication setup screen, select 'Set up'.
3. Verify the email where the authentication code will be sent, then select 'Set up' to complete the process.
   * The email address registered under 'My Account > Membership Information' will be used automatically.

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## Registering an IP for Two-Factor Authentication Exclusion <a href="#id-2-2-ip" id="id-2-2-ip"></a>

You can exclude frequently used IP addresses from Two-Factor Authentication. (Maximum 1 IP)

1. Log in while Two-Factor Authentication is enabled.
2. Enter your ID and Password to proceed with login.
3. During the email authentication step, check 'Disable two-factor authentication login on this IP'.
4. After successfully completing email verification, that IP will no longer require Two-Factor Authentication.
   * You can check the registered IP in 'Security > Two-Factor Authentication Settings'.

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## Disabling Two-Factor Authentication <a href="#id-2-2" id="id-2-2"></a>

* You can disable Two-Factor Authentication from **'Security > Two-Factor Authentication Settings'**.
  * Email verification is required to disable this feature.