---
title: "Configure Locale identification rules"
slug: "configure-locale-identification-rules"
updated: 2026-02-25T07:47:14Z
published: 2026-02-25T07:47:14Z
---

> ## Documentation Index
> Fetch the complete documentation index at: https://support.whatfix.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Configure Locale identification rules

Advanced customization enables you to add custom rules to identify your language preferences directly using the Whatfix user interface. Configure Whatfix to adapt to your language preferences and provide a localized experience to your end users.

Use the following steps to configure a custom locale identification rule:

1. On the Whatfix Guidance dashboard, click **Settings**. ![ia_left_nav_settings](https://cdn.document360.io/a268766e-d74d-4619-9613-e2472f809ffb/Images/Documentation/ia_left_nav_settings.png)
2. Click **Advanced customisation**. ![ia_settings_advanced%20configuration](https://cdn.document360.io/a268766e-d74d-4619-9613-e2472f809ffb/Images/Documentation/ia_settings_advanced%20configuration.png)

1. Click **User rules**. ![click_user_rules](https://cdn.document360.io/a268766e-d74d-4619-9613-e2472f809ffb/Images/Documentation/click_user_rules.png)
2. Click **Create**. ![set user_create rule.png](https://cdn.document360.io/a268766e-d74d-4619-9613-e2472f809ffb/Images/Documentation/set%20user_create%20rule.png)
3. Select **Locale identification**, and then click **Continue**. ![Image](https://cdn.document360.io/a268766e-d74d-4619-9613-e2472f809ffb/Images/Documentation/image-ZTT8NMON.png)
4. Add a **Rule Title**. ![Image](https://cdn.document360.io/a268766e-d74d-4619-9613-e2472f809ffb/Images/Documentation/image-FXNHJO9M.png)
5. In the **Where** section, select where you want the rule to take effect. ![ac_set user_select where.png](https://cdn.document360.io/a268766e-d74d-4619-9613-e2472f809ffb/Images/Documentation/ac_set%20user_select%20where.png)

Info:

- Based on where you want the rule to take place, set up any visibility conditions. For example, to enable the rule across all pages of your application, choose **All Pages** as type.
- For more information, see [Fetch and process information for identification rules](/studio/docs/fetch-and-process-information-for-identification-rules).

1. In the **What** section, configure how Whatfix identifies users. In the **Where do you want to fetch the user from?** dropdown, select the user value that defines the user. For example, if each locale has a unique identifier based on a value from the local storage value, select **From Local Storage** as fetcher. ![ac_set user_select fetcher.png](https://cdn.document360.io/a268766e-d74d-4619-9613-e2472f809ffb/Images/Documentation/ac_set%20user_select%20fetcher.png)
2. In the **How do you want to process it?** dropdown, parse the fetched value using **JSON** or **String Operations**. For more information, see [Fetch and process information for identification rules](/studio/docs/fetch-and-process-information-for-identification-rules). ![ac_set user_select processor.png](https://cdn.document360.io/a268766e-d74d-4619-9613-e2472f809ffb/Images/Documentation/ac_set%20user_select%20processor.png)

Note:

- Add multiple processors to parse the fetched value. Click **Add Processor** to add another parsing method.  

![ac_set user_add processor.png](https://cdn.document360.io/a268766e-d74d-4619-9613-e2472f809ffb/Images/Documentation/ac_set%20user_add%20processor.png)
- Click **Add Sequence** to add more identifiers. Fetch a different value and parse it for another unique identification rule.  

![ac_set user_add sequence.png](https://cdn.document360.io/a268766e-d74d-4619-9613-e2472f809ffb/Images/Documentation/ac_set%20user_add%20sequence.png)

1. Click **Save**.  

![Image](https://cdn.document360.io/a268766e-d74d-4619-9613-e2472f809ffb/Images/Documentation/image-HA9M24AJ.png)

## Related

- [Map language codes to your custom locale rule](/map-language-codes-to-your-custom-locale-rule.md)