diff --git a/Application/Component/DebugBarComponent.php b/Application/Component/DebugBarComponent.php
index 7433bb7..bab791b 100644
--- a/Application/Component/DebugBarComponent.php
+++ b/Application/Component/DebugBarComponent.php
@@ -15,10 +15,12 @@ declare(strict_types=1);
 
 namespace D3\DebugBar\Application\Component;
 
+use D3\DebugBar\Application\Models\AvailabilityCheck;
 use D3\DebugBar\Application\Models\Collectors\OxidConfigCollector;
 use D3\DebugBar\Application\Models\Collectors\OxidShopCollector;
 use D3\DebugBar\Application\Models\Collectors\OxidVersionCollector;
 use D3\DebugBar\Application\Models\Collectors\SmartyCollector;
+use D3\DebugBar\Application\Models\Exceptions\UnavailableException;
 use D3\DebugBar\Application\Models\TimeDataCollectorHandler;
 use DebugBar\Bridge\DoctrineCollector;
 use DebugBar\Bridge\MonologCollector;
@@ -43,8 +45,8 @@ use ReflectionException;
 
 class DebugBarComponent extends BaseController
 {
-    /** @var DebugBar */
-    protected $debugBar;
+    /** @var DebugBar|null */
+    protected $debugBar = null;
     /** @var JavascriptRenderer */
     protected $debugBarRenderer;
 
@@ -63,7 +65,7 @@ class DebugBarComponent extends BaseController
     {
         parent::__construct();
 
-        if (false === isAdmin()) {
+        if (AvailabilityCheck::isAvailable()) {
             $debugbar = new DebugBar();
 
             $this->addCollectors($debugbar);
@@ -180,6 +182,10 @@ class DebugBarComponent extends BaseController
      */
     public function addTimelineMessures(): void
     {
+        if (false === $this->debugBar instanceof DebugBar) {
+            throw new UnavailableException();
+        }
+
         $collectors = $this->debugBar->getCollectors();
         $collectors['time'] = TimeDataCollectorHandler::getInstance();
 
@@ -191,9 +197,14 @@ class DebugBarComponent extends BaseController
 
     /**
      * @return DebugBar
+     * @throws UnavailableException
      */
     public function getDebugBar(): DebugBar
     {
+        if (false === $this->debugBar instanceof DebugBar) {
+            throw new UnavailableException();
+        }
+
         return $this->debugBar;
     }
 
diff --git a/Application/Models/AvailabilityCheck.php b/Application/Models/AvailabilityCheck.php
new file mode 100644
index 0000000..d7cd9d2
--- /dev/null
+++ b/Application/Models/AvailabilityCheck.php
@@ -0,0 +1,83 @@
+<?php
+
+/**
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ *
+ * https://www.d3data.de
+ *
+ * @copyright (C) D3 Data Development (Inh. Thomas Dartsch)
+ * @author    D3 Data Development - Daniel Seifert <info@shopmodule.com>
+ * @link      https://www.oxidmodule.com
+ */
+
+declare(strict_types=1);
+
+namespace D3\DebugBar\Application\Models;
+
+use OxidEsales\Eshop\Application\Model\User;
+use OxidEsales\Eshop\Core\Registry;
+
+class AvailabilityCheck
+{
+    /**
+     * @return bool
+     */
+    public static function isAvailable(): bool
+    {
+        return !isAdmin() && (
+            Registry::getConfig()->getShopConfVar('d3debugbar_showForAdminUsersOnly') != true ||
+            self::userIsMallAdmin()
+        );
+    }
+
+    /**
+     * @return bool
+     */
+    public static function userIsMallAdmin(): bool
+    {
+        $user = Registry::getConfig()->getUser();
+        return $user != null &&
+            $user->isMallAdmin();
+    }
+
+    /**
+     * @return bool
+     */
+    public static function ifDebugBarNotSet(): bool
+    {
+        global $debugBarSet;
+
+        return $debugBarSet !== 1;
+    }
+
+    /**
+     * @return void
+     */
+    public static function markDebugBarAsSet(): void
+    {
+        global $debugBarSet;
+
+        $debugBarSet = 1;
+    }
+
+    /**
+     * @return bool
+     */
+    public static function ifNoErrorOccured(): bool
+    {
+        global $debugBarErrorOccured;
+
+        return $debugBarErrorOccured !== 1;
+    }
+
+    /**
+     * @return void
+     */
+    public static function markErrorOccured(): void
+    {
+        global $debugBarErrorOccured;
+
+        $debugBarErrorOccured = 1;
+    }
+}
diff --git a/Application/Models/DebugBarHandler.php b/Application/Models/DebugBarHandler.php
index 0040e3a..e3d0eae 100644
--- a/Application/Models/DebugBarHandler.php
+++ b/Application/Models/DebugBarHandler.php
@@ -27,7 +27,7 @@ class DebugBarHandler
      */
     public function setErrorHandler(): void
     {
-        if ($this->d3CanActivateDebugBar()) {
+        if (AvailabilityCheck::isAvailable()) {
             /** @var callable $callable */
             $callable = [
                 new DebugBarErrorHandler(),
@@ -50,7 +50,7 @@ class DebugBarHandler
      */
     public function setExceptionHandler(): void
     {
-        if ($this->d3CanActivateDebugBar()) {
+        if (AvailabilityCheck::isAvailable()) {
             set_exception_handler([
                new DebugBarExceptionHandler(),
                'handleUncaughtException',
@@ -63,7 +63,7 @@ class DebugBarHandler
      */
     public function addDebugBarComponent(): void
     {
-        if ($this->d3CanActivateDebugBar()) {
+        if (AvailabilityCheck::isAvailable()) {
             $userComponentNames = Registry::getConfig()->getConfigParam('aUserComponentNames');
             $d3CmpName          = DebugBarComponent::class;
             $blDontUseCache     = 1;
@@ -78,12 +78,4 @@ class DebugBarHandler
             }
         }
     }
-
-    /**
-     * @return bool
-     */
-    protected function d3CanActivateDebugBar(): bool
-    {
-        return false === isAdmin();
-    }
 }
diff --git a/Application/Models/Exceptions/UnavailableException.php b/Application/Models/Exceptions/UnavailableException.php
new file mode 100644
index 0000000..ee4277a
--- /dev/null
+++ b/Application/Models/Exceptions/UnavailableException.php
@@ -0,0 +1,22 @@
+<?php
+
+/**
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ *
+ * https://www.d3data.de
+ *
+ * @copyright (C) D3 Data Development (Inh. Thomas Dartsch)
+ * @author    D3 Data Development - Daniel Seifert <info@shopmodule.com>
+ * @link      https://www.oxidmodule.com
+ */
+
+declare(strict_types=1);
+
+namespace D3\DebugBar\Application\Models\Exceptions;
+
+use OxidEsales\Eshop\Core\Exception\StandardException;
+
+class UnavailableException extends StandardException
+{
+}
diff --git a/Application/views/admin/de/debugbar_lang.php b/Application/views/admin/de/debugbar_lang.php
new file mode 100644
index 0000000..fdcab7b
--- /dev/null
+++ b/Application/views/admin/de/debugbar_lang.php
@@ -0,0 +1,26 @@
+<?php
+
+/**
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ *
+ * https://www.d3data.de
+ *
+ * @copyright (C) D3 Data Development (Inh. Thomas Dartsch)
+ * @author    D3 Data Development - Daniel Seifert <info@shopmodule.com>
+ * @link      https://www.oxidmodule.com
+ */
+
+declare(strict_types=1);
+
+$sLangName = "Deutsch";
+// -------------------------------
+// RESOURCE IDENTITFIER = STRING
+// -------------------------------
+$aLang = [
+
+//Navigation
+    'charset'                                       => 'UTF-8',
+    'SHOP_MODULE_GROUP_d3debugbar_general'          => 'Grundeinstellungen',
+    'SHOP_MODULE_d3debugbar_showForAdminUsersOnly'  => 'DebugBar nur anzeigen, wenn angemeldeter Benutzer ein Adminbenutzer ist',
+];
diff --git a/Application/views/admin/en/debugbar_lang.php b/Application/views/admin/en/debugbar_lang.php
new file mode 100644
index 0000000..b7d1827
--- /dev/null
+++ b/Application/views/admin/en/debugbar_lang.php
@@ -0,0 +1,26 @@
+<?php
+
+/**
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ *
+ * https://www.d3data.de
+ *
+ * @copyright (C) D3 Data Development (Inh. Thomas Dartsch)
+ * @author    D3 Data Development - Daniel Seifert <info@shopmodule.com>
+ * @link      https://www.oxidmodule.com
+ */
+
+declare(strict_types=1);
+
+$sLangName = "English";
+// -------------------------------
+// RESOURCE IDENTITFIER = STRING
+// -------------------------------
+$aLang = [
+
+//Navigation
+    'charset'                                       => 'UTF-8',
+    'SHOP_MODULE_GROUP_d3debugbar_general'          => 'Default settings',
+    'SHOP_MODULE_d3debugbar_showForAdminUsersOnly'  => 'show DebugBar only if logged in user is an admin user',
+];
diff --git a/Core/DebugBarErrorHandler.php b/Core/DebugBarErrorHandler.php
index 1427f61..71b85b4 100644
--- a/Core/DebugBarErrorHandler.php
+++ b/Core/DebugBarErrorHandler.php
@@ -15,6 +15,7 @@ declare(strict_types=1);
 
 namespace D3\DebugBar\Core;
 
+use D3\DebugBar\Application\Models\AvailabilityCheck;
 use D3\DebugBar\Application\Models\Exceptions\CompileErrorException;
 use D3\DebugBar\Application\Models\Exceptions\CoreErrorException;
 use D3\DebugBar\Application\Models\Exceptions\ParseException;
@@ -39,8 +40,7 @@ class DebugBarErrorHandler
      */
     public function callback(int $severity, string $message, string $file, int $line)
     {
-        global $debugBarErrorOccured;
-        $debugBarErrorOccured = 1;
+        AvailabilityCheck::markErrorOccured();
 
         if (0 === error_reporting() || !(error_reporting() & $severity)) {
             // This error code is not included in error_reporting.
diff --git a/Core/DebugBarExceptionHandler.php b/Core/DebugBarExceptionHandler.php
index 2a962f1..95dbdb6 100644
--- a/Core/DebugBarExceptionHandler.php
+++ b/Core/DebugBarExceptionHandler.php
@@ -16,6 +16,8 @@ declare(strict_types=1);
 namespace D3\DebugBar\Core;
 
 use D3\DebugBar\Application\Component\DebugBarComponent;
+use D3\DebugBar\Application\Models\AvailabilityCheck;
+use D3\DebugBar\Application\Models\Exceptions\UnavailableException;
 use DebugBar\DataCollector\ExceptionsCollector;
 use DebugBar\DebugBarException;
 use OxidEsales\Eshop\Core\ConfigFile;
@@ -42,7 +44,7 @@ class DebugBarExceptionHandler
             $defaultExceptionHandler->writeExceptionToLog($exception);
         } catch (Throwable $loggerException) {
             /**
-             * Its not possible to get the logger from the DI container.
+             * It's not possible to get the logger from the DI container.
              * Try again to log original exception (without DI container) in order to show the root cause of a problem.
              */
             try {
@@ -50,13 +52,11 @@ class DebugBarExceptionHandler
                 $logger = $loggerServiceFactory->getLogger();
                 $logger->error($exception->getTraceAsString());
             } catch (Throwable $throwableWithoutPossibilityToWriteToLogFile) {
-                // It is not possible to log because e.g. the log file is not writable.
+                // It's not possible to log because e.g. the log file is not writable.
             }
         }
 
-        global $debugBarSet;
-
-        if ($debugBarSet !== 1 && false === isAdmin()) {
+        if (AvailabilityCheck::isAvailable() && AvailabilityCheck::ifDebugBarNotSet()) {
             try {
                 /** @var DebugBarComponent $debugBarComponent */
                 $debugBarComponent = oxNew(DebugBarComponent::class);
@@ -77,13 +77,13 @@ HTML;
     </head>
     <body>
 HTML;
-                $debugBarSet = 1;
+                AvailabilityCheck::markDebugBarAsSet();
                 echo $debugBarComponent->getRenderer()->render();
                 echo <<<HTML
     </body>
 </html>
 HTML;
-            } catch (DebugBarException $e) {
+            } catch (DebugBarException|UnavailableException $e) {
                 Registry::getLogger()->error($e->getMessage());
                 Registry::getUtilsView()->addErrorToDisplay($e);
             }
diff --git a/Modules/Core/Config_DebugBar.php b/Modules/Core/Config_DebugBar.php
index fa55d63..7bac4d9 100644
--- a/Modules/Core/Config_DebugBar.php
+++ b/Modules/Core/Config_DebugBar.php
@@ -15,15 +15,21 @@ declare(strict_types=1);
 
 namespace D3\DebugBar\Modules\Core;
 
+use D3\DebugBar\Application\Models\AvailabilityCheck;
 use D3\DebugBar\Core\DebugBarExceptionHandler;
+use OxidEsales\Eshop\Core\Exception\ExceptionHandler;
 
 class Config_DebugBar extends Config_DebugBar_parent
 {
     /**
-     * @return DebugBarExceptionHandler
+     * @return DebugBarExceptionHandler|ExceptionHandler
      */
     protected function getExceptionHandler()
     {
-        return new DebugBarExceptionHandler();
+        if (AvailabilityCheck::isAvailable()) {
+            return new DebugBarExceptionHandler();
+        }
+
+        return parent::getExceptionHandler();
     }
 }
diff --git a/Modules/Core/ShopControl_DebugBar.php b/Modules/Core/ShopControl_DebugBar.php
index 281b7d0..606764e 100644
--- a/Modules/Core/ShopControl_DebugBar.php
+++ b/Modules/Core/ShopControl_DebugBar.php
@@ -16,6 +16,7 @@ declare(strict_types=1);
 namespace D3\DebugBar\Modules\Core;
 
 use D3\DebugBar\Application\Component\DebugBarComponent;
+use D3\DebugBar\Application\Models\AvailabilityCheck;
 use D3\DebugBar\Application\Models\DebugBarHandler;
 use D3\DebugBar\Core\DebugBarExceptionHandler;
 use OxidEsales\Eshop\Core\Exception\StandardException;
@@ -45,14 +46,12 @@ class ShopControl_DebugBar extends ShopControl_DebugBar_parent
     {
         parent::start();
 
-        global $debugBarSet, $debugBarErrorOccured;
-
-        if (!isAdmin() && $debugBarSet !== 1 && $debugBarErrorOccured !== 1) {
+        if (AvailabilityCheck::isAvailable() && AvailabilityCheck::ifDebugBarNotSet() && AvailabilityCheck::ifNoErrorOccured()) {
             $activeView =  Registry::getConfig()->getTopActiveView();
             /** @var DebugBarComponent|null $debugBarComponent */
             $debugBarComponent = $activeView->getComponent(DebugBarComponent::class);
             if ($debugBarComponent) {
-                $debugBarSet = 1;
+                AvailabilityCheck::markDebugBarAsSet();
                 echo $debugBarComponent->getRenderer()->renderHead();
                 $debugBarComponent->addTimelineMessures();
                 echo $debugBarComponent->getRenderer()->render();
diff --git a/Modules/functions.php b/Modules/functions.php
index 18ddf07..39fb8eb 100644
--- a/Modules/functions.php
+++ b/Modules/functions.php
@@ -14,6 +14,8 @@
 declare(strict_types=1);
 
 use D3\DebugBar\Application\Component\DebugBarComponent;
+use D3\DebugBar\Application\Models\AvailabilityCheck;
+use D3\DebugBar\Application\Models\Exceptions\UnavailableException;
 use D3\DebugBar\Application\Models\TimeDataCollectorHandler;
 use DebugBar\DataCollector\MessagesCollector;
 use DebugBar\DebugBarException;
@@ -60,7 +62,6 @@ function stopProfile(string $sProfileName): void
     $timeDataCollector = TimeDataCollectorHandler::getInstance();
     $timeDataCollector->stopMeasure($hash);
 
-
     global $aStartTimes;
     global $executionCounts;
     if (!isset($executionCounts[$sProfileName])) {
@@ -90,17 +91,23 @@ function debugVar($mVar, bool $blToFile = false): void
             fclose($f);
         }
     } else {
-        if (!isAdmin()) {
+        try {
+            if (! AvailabilityCheck::isAvailable()) {
+                throw new UnavailableException();
+            }
             $activeView = Registry::getConfig()->getTopActiveView();
-            /** @var DebugBarComponent $debugBarComponent */
+            /** @var DebugBarComponent|null $debugBarComponent */
             $debugBarComponent = $activeView->getComponent(DebugBarComponent::class);
+            if ($debugBarComponent === null) {
+                throw new UnavailableException();
+            }
             /** @var MessagesCollector $messages */
             $messages = $debugBarComponent->getDebugBar()->getCollector('messages');
-            $trace = debug_backtrace(DEBUG_BACKTRACE_IGNORE_ARGS);
+            $trace    = debug_backtrace(DEBUG_BACKTRACE_IGNORE_ARGS);
             //$location = $trace[1]['class'] . '::' . $trace[1]['function']. '(' . $trace[0]['line'] . ')';
             $location = $trace[1]['class'] . '::' . $trace[1]['function'];
             $messages->addMessage($mVar, $location);
-        } else {
+        } catch (UnavailableException $e) {
             dumpVar($mVar, $blToFile);
         }
     }
diff --git a/Setup/Events.php b/Setup/Events.php
index beae88e..768f5b6 100644
--- a/Setup/Events.php
+++ b/Setup/Events.php
@@ -27,7 +27,7 @@ class Events
         /** @var string $shopDir */
         $shopDir = Registry::getConfig()->getConfigParam('sShopDir');
         if (false === file_exists(
-            rtrim($shopDir, '/').'/out/debugbar/debugbar.jas'
+            rtrim($shopDir, '/').'/out/debugbar/debugbar.js'
         )) {
             Registry::getUtilsView()->addErrorToDisplay(
                 'The asset files cannot be found. Have you forgotten an installation step described in <a href="https://git.d3data.de/D3Public/DebugBar/src/branch/main/README.en.md">README</a>? Then please run the installation again.'.
diff --git a/ToDo.md b/ToDo.md
index c5291ef..590628e 100644
--- a/ToDo.md
+++ b/ToDo.md
@@ -3,4 +3,3 @@
 - clear tpl cache button
 - phpinfo() overview
 - automatic switch between Smarty and Twig
-- displayed in live shop when logged in as admin
diff --git a/metadata.php b/metadata.php
index 059b365..71dc91d 100644
--- a/metadata.php
+++ b/metadata.php
@@ -46,6 +46,13 @@ $aModule = [
         'onActivate'    => '\D3\DebugBar\Setup\Events::onActivate',
     ],
     'templates'   => [],
-    'settings'    => [],
+    'settings'    => [
+        [
+            'group'     => $sModuleId.'_general',
+            'name'      => $sModuleId.'_showForAdminUsersOnly',
+            'type'      => 'bool',
+            'value'     => false,
+        ],
+    ],
     'blocks'      => [],
 ];
diff --git a/phpstan.neon b/phpstan.neon
index 00a8587..46cc7ca 100644
--- a/phpstan.neon
+++ b/phpstan.neon
@@ -12,6 +12,5 @@ parameters:
         - '#Offset .* does not exist on array{function: .*}.#'
         - '#ShopControl_DebugBar::_handle.*Exception\(\) has no return type specified#'
         - '#ShopControl_DebugBar::start\(\) has no return type specified.#'
-        - '#Config_DebugBar::getExceptionHandler\(\) should be compatible with return type #'
         - '#UtilsView::addErrorToDisplay\(\) expects OxidEsales\\Eshop\\Core\\Contract\\IDisplayError#'
         - '#PHPDoc tag @throws with type .*\\ContainerExceptionInterface is not subtype of Throwable#'