diff --git a/README.md b/README.md
new file mode 100644
index 0000000..7cc913c
--- /dev/null
+++ b/README.md
@@ -0,0 +1,10 @@
+# oxtotp (2FA)
+Modul für eine 2-Faktor-Authentisierung (2FA) zum Login in Front- und Backend zusätzlich zu Benutzername und Passwort.
+
+- Authentisierung wird nur bei Benutzerkonten gezeigt, die dieses aktiviert haben - sonst nur Standardanmeldung die Basis der Passwortgenerierung wird für jedes Benutzerkonto individuell angelegt</li>
+
+- Einrichtung des Zugangs in der Auth-App kann durch scanbaren QR-Code oder kopierbare Zeichenkette erfolgen
+
+- Validierung der Einmalpassworte und Generierung der QR-Codes werden ausschließlich innerhalb des Shops durchgeführt - keine Kommunikation nach außen nötig
+
+- statische Backupcodes ermöglichen auch eine (begrenzte) Anmeldung ohne Zugang zum Generierungstool
diff --git a/composer.json b/composer.json
index eb0ce36..0243b7f 100644
--- a/composer.json
+++ b/composer.json
@@ -15,6 +15,12 @@
         "email": "info@shopmodule.com",
         "homepage": "https://www.d3data.de",
         "role": "Owner"
+    },
+    {
+        "name": "Tobi Matthaiou",
+        "email": "tm@loberon.com",
+        "homepage": "http://www.loberon.de",
+        "role": "Contributor"
     }
   ],
   "support": {
@@ -32,9 +38,10 @@
   },
   "require": {
     "php": ">=5.6",
-    "oxid-esales/oxideshop-metapackage-ce": "~6.0.3 || ~6.1.0 || ~6.2.0",
+    "ext-xmlwriter": "*",
+    "oxid-esales/oxideshop-metapackage-ce": "~6.0.3 || ~6.1.0 || ~6.2.0 || ~6.3.0  || ~6.4.0  || ~6.5.0",
     "spomky-labs/otphp": "^8.3",
-    "bacon/bacon-qr-code": "^1.0",
+    "bacon/bacon-qr-code": "^1.0 || ^2.0",
     "zendframework/zend-math": "^3.2"
   },
   "suggest": {
diff --git a/src/Application/Factory/BaconQrCodeFactory.php b/src/Application/Factory/BaconQrCodeFactory.php
new file mode 100644
index 0000000..69808fe
--- /dev/null
+++ b/src/Application/Factory/BaconQrCodeFactory.php
@@ -0,0 +1,47 @@
+<?php
+
+declare(strict_types=1);
+
+namespace D3\Totp\Application\Factory;
+
+use BaconQrCode\Renderer\RendererInterface;
+use BaconQrCode\Renderer\Image\Svg;                   // v1.0.3
+use BaconQrCode\Renderer\ImageRenderer;               // v2.0.0
+use BaconQrCode\Renderer\Image\SvgImageBackEnd;       // v2.0.0
+use BaconQrCode\Renderer\RendererStyle\RendererStyle; // v2.0.0
+
+
+class BaconQrCodeFactory
+{
+    /**
+     * @return RendererInterface
+     */
+    public static function renderer($size)
+    {
+        if (class_exists(Svg::class)) {
+            return self::v100($size);
+        }
+
+        return self::v200($size);
+    }
+
+    private static function v200($size)
+    {
+        $renderer = oxNew(
+            ImageRenderer::class,
+            oxNew(RendererStyle::class, $size),
+            oxNew(SvgImageBackEnd::class),
+        );
+
+        return $renderer;
+    }
+
+    private static function v100($size)
+    {
+        $renderer = oxNew(Svg::class);
+        $renderer->setHeight($size);
+        $renderer->setWidth($size);
+
+        return $renderer;
+    }
+}
diff --git a/src/Application/Model/d3totp.php b/src/Application/Model/d3totp.php
index 4b35a4c..6630bec 100644
--- a/src/Application/Model/d3totp.php
+++ b/src/Application/Model/d3totp.php
@@ -15,9 +15,9 @@
 
 namespace D3\Totp\Application\Model;
 
-use BaconQrCode\Renderer\Image\Svg;
 use BaconQrCode\Renderer\RendererInterface;
 use BaconQrCode\Writer;
+use D3\Totp\Application\Factory\BaconQrCodeFactory;
 use D3\Totp\Application\Model\Exceptions\d3totp_wrongOtpException;
 use Doctrine\DBAL\DBALException;
 use OTPHP\TOTP;
@@ -177,10 +177,7 @@ class d3totp extends BaseModel
      */
     public function getQrCodeElement()
     {
-        $renderer = oxNew(Svg::class);
-        $renderer->setHeight(200);
-        $renderer->setWidth(200);
-
+        $renderer = BaconQrCodeFactory::renderer(200);
         $writer = $this->d3GetWriter($renderer);
         return $writer->writeString($this->getTotp()->getProvisioningUri());
     }
diff --git a/src/tests/unit/Application/Model/d3totpTest.php b/src/tests/unit/Application/Model/d3totpTest.php
index df22d25..a6fbde7 100644
--- a/src/tests/unit/Application/Model/d3totpTest.php
+++ b/src/tests/unit/Application/Model/d3totpTest.php
@@ -17,8 +17,8 @@
 
 namespace D3\Totp\tests\unit\Application\Model;
 
-use BaconQrCode\Renderer\Image\Svg;
 use BaconQrCode\Writer;
+use D3\Totp\Application\Factory\BaconQrCodeFactory;
 use D3\Totp\Application\Model\d3backupcodelist;
 use D3\Totp\Application\Model\d3totp;
 use D3\Totp\Application\Model\Exceptions\d3totp_wrongOtpException;
@@ -484,7 +484,7 @@ class d3totpTest extends d3TotpUnitTestCase
             'getFieldData',
         ));
         $oUserMock->method('getFieldData')->willReturn('username');
-        
+
         /** @var d3totp|PHPUnit_Framework_MockObject_MockObject $oModelMock */
         $oModelMock = $this->getMock(d3totp::class, array(
             'getUser',
@@ -544,7 +544,7 @@ class d3totpTest extends d3TotpUnitTestCase
             'getQrCodeUri'
         ));
         $oTotpMock->expects($this->once())->method('getQrCodeUri')->willReturn(true);
-        
+
         /** @var d3totp|PHPUnit_Framework_MockObject_MockObject $oModelMock */
         $oModelMock = $this->getMock(d3totp::class, array(
             'getTotp'
@@ -562,7 +562,7 @@ class d3totpTest extends d3TotpUnitTestCase
      */
     public function getQrCodeElement()
     {
-        $renderer = oxNew(Svg::class);
+        $renderer = BaconQrCodeFactory::renderer(200);
 
         /** @var d3totp|PHPUnit_Framework_MockObject_MockObject $oTotpMock */
         $oTotpMock = $this->getMock(d3totp::class, array(
@@ -595,14 +595,14 @@ class d3totpTest extends d3TotpUnitTestCase
      */
     public function d3GetWriterReturnsRightInstance()
     {
-        $renderer = oxNew(Svg::class);
+        $renderer = BaconQrCodeFactory::renderer(200);;
 
         $this->assertInstanceOf(
             Writer::class,
             $this->callMethod($this->_oModel, 'd3GetWriter', [$renderer])
         );
     }
-    
+
     /**
      * @test
      * @throws ReflectionException
@@ -878,4 +878,4 @@ class d3totpTest extends d3TotpUnitTestCase
             $this->callMethod($this->_oModel, 'delete')
         );
     }
-}
\ No newline at end of file
+}