diff --git a/CHANGELOG.md b/CHANGELOG.md
index 1b946b9..624ae8c 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,7 @@
+## 1.0.3
+
+- Custom or third party form validation
+
 ## 1.0.2
 
 - Action option added
diff --git a/README.md b/README.md
index eac5864..652db57 100644
--- a/README.md
+++ b/README.md
@@ -12,6 +12,7 @@
 - Login
 - Register
 - Reset password
+- Custom or third-party forms
 
 ![Cloudflare Turnstile](screenshot.png)
 
@@ -69,6 +70,35 @@ Override the default action name by adding an action option:
 | Login          | themes/{themeName}/templates/customer/_partials/login-form.tpl                |
 | Reset password | themes/{themeName}/templates/customer/password-email.tpl                      |
 
+### Protect a custom or third-party form
+
+1. Add the Cloudflare Turnstile widget in the Smarty form template:
+
+```html
+{widget name='pixel_cloudflare_turnstile' action='custom-form'}
+```
+
+2. In a module, add a new hook to call Turnstile validation on form post:
+
+```php
+public function install(): bool
+{
+    return parent::install() &&
+        $this->registerHook('actionFrontControllerInitBefore');
+}
+
+public function hookActionFrontControllerInitBefore(array $params): void
+{
+    $controllerClass = get_class($params['controller']);
+
+    if ($controllerClass === 'MyFormController' && Tools::isSubmit('myForm')) {
+        Pixel_cloudflare_turnstile::turnstileValidation();
+    }
+}
+```
+
+If the validation fails, the customer is redirected to the previous page with an error message.
+
 ### Testing
 
 Use the following sitekeys and secret keys for testing purposes:
diff --git a/pixel_cloudflare_turnstile.php b/pixel_cloudflare_turnstile.php
index 1618e3f..3159346 100644
--- a/pixel_cloudflare_turnstile.php
+++ b/pixel_cloudflare_turnstile.php
@@ -34,7 +34,7 @@ class Pixel_cloudflare_turnstile extends Module implements WidgetInterface
     public function __construct()
     {
         $this->name = 'pixel_cloudflare_turnstile';
-        $this->version = '1.0.2';
+        $this->version = '1.0.3';
         $this->author = 'Pixel Open';
         $this->tab = 'front_office_features';
         $this->need_instance = 0;
@@ -247,9 +247,6 @@ protected function canProcess(string $controllerClass, bool $validate = false):
             return true;
         }
 
-        // Custom
-        // Add a new test here. @TODO Find a way to extend in an other module
-
         return false;
     }
 
@@ -271,7 +268,7 @@ public function isAvailable(string $form): bool
      * @return void
      * @throws Exception
      */
-    protected function turnstileValidation(): void
+    public static function turnstileValidation(): void
     {
         $referer = $_SERVER['HTTP_REFERER'] ?? 'index';
         $cookie  = Context::getContext()->cookie;
@@ -280,7 +277,7 @@ protected function turnstileValidation(): void
         if (!$response) {
             $cookie->__set(
                 self::TURNSTILE_SESSION_ERROR_KEY,
-                $this->trans(
+                Context::getContext()->getTranslator()->trans(
                     'Please validate the security field.',
                     [],
                     'Modules.Pixelcloudflareturnstile.Shop'
@@ -290,7 +287,7 @@ protected function turnstileValidation(): void
         }
 
         $data = [
-            'secret'   => $this->getSecretKey(),
+            'secret'   => Configuration::get(self::CONFIG_CLOUDFLARE_TURNSTILE_SECRET_KEY),
             'response' => $response,
         ];
 
@@ -307,11 +304,11 @@ protected function turnstileValidation(): void
         if (!($result['success'] ?? false)) {
             $errors = $result['error-codes'] ?? ['unavailable'];
             foreach ($errors as $key => $errorCode) {
-                $errors[$key] = $this->getErrorMessage($errorCode);
+                $errors[$key] = self::getErrorMessage($errorCode);
             }
             $cookie->__set(
                 self::TURNSTILE_SESSION_ERROR_KEY,
-                $this->trans(
+                Context::getContext()->getTranslator()->trans(
                     'Security validation error:',
                     [],
                     'Modules.Pixelcloudflareturnstile.Shop'
@@ -328,7 +325,7 @@ protected function turnstileValidation(): void
      *
      * @return string
      */
-    protected function getErrorMessage(string $code): string
+    protected static function getErrorMessage(string $code): string
     {
         $messages = [
             'missing-input-secret'   => 'the secret parameter was not passed.',
@@ -485,7 +482,6 @@ protected function getConfigFields(): array
                             'value' => self::FORM_PASSWORD,
                             'name'  => $this->trans('Reset Password', [], 'Modules.Pixelcloudflareturnstile.Admin'),
                         ],
-                        // Add a new custom form here. @TODO Find a way to extend in an other module
                     ],
                     'id'   => 'value',
                     'name' => 'name',