> ## Documentation Index
> Fetch the complete documentation index at: https://docs-staging-fix-docs-5525.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.
# InterstitialCaptcha
> Describes all the properties and methods available to customize the Universal Login `interstitial-captcha` screen.
The InterstitialCaptcha class implements the `interstitial-captcha` screen functionality. This screen prompts the user to complete a CAPTCHA challenge during the authentication flow.
## Constructors
Create an instance of InterstitialCaptcha screen manager:
```typescript Example theme={null}
import InterstitialCaptcha from '@auth0/auth0-acul-js/interstitial-captcha';
const interstitialCaptchaManager = new InterstitialCaptcha();
await interstitialCaptchaManager.submitCaptcha({ captcha: 'captchaValue' });
```
## Properties
BrandingMembers}>
Provides branding-related configurations, such as branding theme and settings.
ClientMembers}>
Provides client-related configurations, such as `id`, `name`, and `logoUrl`, for the `interstitial-captcha` screen.
OrganizationMembers}>
Provides information about the user's Organization, such as `id` and `name`.
PromptMembers}>
Contains data about the current prompt in the authentication flow.
ScreenMembers}>
Contains details specific to the `interstitial-captcha` screen, including its configuration and context.
TenantMembers}>
Contains data related to the tenant, such as `id` and associated metadata.
TransactionMembers}>
Provides transaction-specific data for the `interstitial-captcha` screen, such as active identifiers and flow states.
UntrustedDataMembers}>
Handles untrusted data passed to the SDK, such as user input during the CAPTCHA challenge flow.
UserMembers}>
Details of the active user, including `username`, `email`, and `roles`.
## Methods
This method changes the display language of the Universal Login page.
```typescript Example theme={null}
import InterstitialCaptcha from '@auth0/auth0-acul-js/interstitial-captcha';
const interstitialCaptchaManager = new InterstitialCaptcha();
interstitialCaptchaManager.changeLanguage({
language: 'fr',
});
```
**Method Parameters**
[LanguageChangeOptions](/docs/libraries/acul/js-sdk/Screens/interfaces/LanguageChangeOptions).
The locale code for the desired language (for example, `'en'`, `'fr'`, `'es'`).
When set to `'session'`, the selected language persists for the duration of the session.
Error[]}>
This method retrieves the array of transaction errors from the context, or an empty array if none exist.
This method submits the CAPTCHA response to continue the authentication flow.
```typescript Example theme={null}
import InterstitialCaptcha from '@auth0/auth0-acul-js/interstitial-captcha';
const interstitialCaptchaManager = new InterstitialCaptcha();
await interstitialCaptchaManager.submitCaptcha({ captcha: 'captchaValue' });
```
**Method Parameters**
[SubmitCaptchaOptions](/docs/libraries/acul/js-sdk/Screens/interfaces/SubmitCaptchaOptions).
The CAPTCHA response token.