# 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.

<br>

## 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'.

<br>

## 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.


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://onestore-dev.gitbook.io/dev/chi/docs/member/security/authentication.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.