diff --git a/CampusAppWP8/CampusAppWP8/Pages/Campusmap/CampusMapPage.xaml.cs b/CampusAppWP8/CampusAppWP8/Pages/Campusmap/CampusMapPage.xaml.cs
index f34c25c9..0b2fae14 100644
--- a/CampusAppWP8/CampusAppWP8/Pages/Campusmap/CampusMapPage.xaml.cs
+++ b/CampusAppWP8/CampusAppWP8/Pages/Campusmap/CampusMapPage.xaml.cs
@@ -533,11 +533,11 @@ namespace CampusAppWP8.Pages.Campusmap
                 // Errorcase
                 if (this.Dispatcher != null)
                 {
-                    this.Dispatcher.BeginInvoke(new Action(() => MessageBoxes.ShowMainModelErrorMessageBox(AppResources.ScarNfc_Fail)));
+                    this.Dispatcher.BeginInvoke(new Action(() => MessageBoxes.ShowMainModelErrorMessageBox(AppResources.BTUTag_WrongTag)));
                 }
                 else
                 {
-                    MessageBoxes.ShowMainModelErrorMessageBox(AppResources.ScarNfc_Fail);
+                    MessageBoxes.ShowMainModelErrorMessageBox(AppResources.BTUTag_WrongTag);
                 }
             }
 
diff --git a/CampusAppWP8/CampusAppWP8/Pages/Dev/QRScanner.xaml.cs b/CampusAppWP8/CampusAppWP8/Pages/Dev/QRScanner.xaml.cs
index d0740f3a..453bd611 100644
--- a/CampusAppWP8/CampusAppWP8/Pages/Dev/QRScanner.xaml.cs
+++ b/CampusAppWP8/CampusAppWP8/Pages/Dev/QRScanner.xaml.cs
@@ -226,10 +226,16 @@ namespace CampusAppWP8.Pages.Dev
 
             var result = this.barcodeReader.Decode(this.bit);
 
-            if (result != null)
+            if (result != null )
             {
                 Dispatcher.BeginInvoke(delegate
                 {
+
+                    if (!Wp8StringManager.IsBTUQRTag(result.Text))
+                    {
+                        MessageBoxes.ShowMainModelErrorMessageBox(AppResources.BTUTag_WrongTag);
+                        return;
+                    }
                     if (this.resultAppStoreKey != null)
                     {
                         if (NavigationService.CanGoBack)
diff --git a/CampusAppWP8/CampusAppWP8/Pages/StartPage.xaml.cs b/CampusAppWP8/CampusAppWP8/Pages/StartPage.xaml.cs
index 8cdbd02d..6b98afdb 100644
--- a/CampusAppWP8/CampusAppWP8/Pages/StartPage.xaml.cs
+++ b/CampusAppWP8/CampusAppWP8/Pages/StartPage.xaml.cs
@@ -411,26 +411,46 @@ namespace CampusAppWP8.Pages
         {
             // create ndefMessage
             this.device.StopSubscribingForMessage(message.SubscriptionId);
-
-            if (AppSettings.BTUTagDefaultHandler.CampusMap == Settings.AppSetting.TagDefaultHandler)
+            var ndefMessage = message.Data;
+            byte[] data = ndefMessage.ToArray();
+            NDEFMessage ndef = new NDEFMessage(data);
+            string nfcContent = ndef.GetContent();
+            if (nfcContent == null)
             {
-                var ndefMessage = message.Data;
-                byte[] data = ndefMessage.ToArray();
-                NDEFMessage ndef = new NDEFMessage(data);
-
-                // search for placeId
-                string nfcContent = ndef.GetContent();
-                this.GoToCampusMappage(nfcContent);
+                nfcContent = string.Empty;
             }
-            else
+
+            string searchPid = Wp8StringManager.FilterPlaceIdinNFCResultString(nfcContent.Trim());
+
+            if (searchPid == null)
             {
+                // Errorcase
                 if (this.Dispatcher != null)
                 {
-                    this.Dispatcher.BeginInvoke(new Action(() => this.ShowBtuTagMessageBox()));
+                    this.Dispatcher.BeginInvoke(new Action(() => MessageBoxes.ShowMainModelErrorMessageBox(AppResources.BTUTag_WrongTag)));
                 }
                 else
                 {
-                    this.ShowBtuTagMessageBox();
+                    MessageBoxes.ShowMainModelErrorMessageBox(AppResources.BTUTag_WrongTag);
+                }
+            }
+            else
+            {
+                if (AppSettings.BTUTagDefaultHandler.CampusMap == Settings.AppSetting.TagDefaultHandler)
+                {
+                    // search for placeId
+                    this.GoToCampusMappage(nfcContent);
+                }
+                else
+                {
+                    if (this.Dispatcher != null)
+                    {
+                        this.Dispatcher.BeginInvoke(new Action(() => this.ShowBtuTagMessageBox()));
+                    }
+                    else
+                    {
+                        this.ShowBtuTagMessageBox();
+                    }
                 }
             }
 
diff --git a/CampusAppWP8/CampusAppWP8/Resources/AppResources.Designer.cs b/CampusAppWP8/CampusAppWP8/Resources/AppResources.Designer.cs
index 1f74aae6..f3e2f9f1 100644
--- a/CampusAppWP8/CampusAppWP8/Resources/AppResources.Designer.cs
+++ b/CampusAppWP8/CampusAppWP8/Resources/AppResources.Designer.cs
@@ -150,6 +150,15 @@ namespace CampusAppWP8.Resources {
             }
         }
         
+        /// <summary>
+        ///   Sucht eine lokalisierte Zeichenfolge, die Der eingescannte Tag ist kein BTU-Tag ähnelt.
+        /// </summary>
+        public static string BTUTag_WrongTag {
+            get {
+                return ResourceManager.GetString("BTUTag_WrongTag", resourceCulture);
+            }
+        }
+        
         /// <summary>
         ///   Sucht eine lokalisierte Zeichenfolge, die Gebäude ähnelt.
         /// </summary>
@@ -915,15 +924,6 @@ namespace CampusAppWP8.Resources {
             }
         }
         
-        /// <summary>
-        ///   Sucht eine lokalisierte Zeichenfolge, die Kein gültigen NFC-Tag gefunden ähnelt.
-        /// </summary>
-        public static string ScarNfc_Fail {
-            get {
-                return ResourceManager.GetString("ScarNfc_Fail", resourceCulture);
-            }
-        }
-        
         /// <summary>
         ///   Sucht eine lokalisierte Zeichenfolge, die Bitte halten Sie das Handy vor dem NFC-Tag ähnelt.
         /// </summary>
diff --git a/CampusAppWP8/CampusAppWP8/Resources/AppResources.resx b/CampusAppWP8/CampusAppWP8/Resources/AppResources.resx
index 4b31e010..f45840a6 100644
--- a/CampusAppWP8/CampusAppWP8/Resources/AppResources.resx
+++ b/CampusAppWP8/CampusAppWP8/Resources/AppResources.resx
@@ -416,9 +416,6 @@
   <data name="App_ScanQR" xml:space="preserve">
     <value>BTU-Tag via QR-Code</value>
   </data>
-  <data name="ScarNfc_Fail" xml:space="preserve">
-    <value>Kein gültigen NFC-Tag gefunden</value>
-  </data>
   <data name="ScarNfc_Search" xml:space="preserve">
     <value>Bitte halten Sie das Handy vor dem NFC-Tag</value>
   </data>
@@ -488,4 +485,7 @@
   <data name="Setting_ImpressumTitle" xml:space="preserve">
     <value>Über BTU Campus-App</value>
   </data>
+  <data name="BTUTag_WrongTag" xml:space="preserve">
+    <value>Der eingescannte Tag ist kein BTU-Tag</value>
+  </data>
 </root>
\ No newline at end of file
diff --git a/CampusAppWP8/CampusAppWP8/Resources/Constants.resx b/CampusAppWP8/CampusAppWP8/Resources/Constants.resx
index 48cde16c..ab3dd3e0 100644
--- a/CampusAppWP8/CampusAppWP8/Resources/Constants.resx
+++ b/CampusAppWP8/CampusAppWP8/Resources/Constants.resx
@@ -585,4 +585,7 @@
   <data name="ParamRemoveBack" xml:space="preserve">
     <value>removeBack</value>
   </data>
+  <data name="BTUTAG_QRStart" xml:space="preserve">
+    <value>BTU-CampusApp</value>
+  </data>
 </root>
\ No newline at end of file
diff --git a/CampusAppWP8/CampusAppWP8/Resources/Constants1.Designer.cs b/CampusAppWP8/CampusAppWP8/Resources/Constants1.Designer.cs
index 7f0274c7..c193b4a1 100644
--- a/CampusAppWP8/CampusAppWP8/Resources/Constants1.Designer.cs
+++ b/CampusAppWP8/CampusAppWP8/Resources/Constants1.Designer.cs
@@ -195,6 +195,15 @@ namespace CampusAppWP8.Resources {
             }
         }
         
+        /// <summary>
+        ///   Sucht eine lokalisierte Zeichenfolge, die BTU-CampusApp ähnelt.
+        /// </summary>
+        public static string BTUTAG_QRStart {
+            get {
+                return ResourceManager.GetString("BTUTAG_QRStart", resourceCulture);
+            }
+        }
+        
         /// <summary>
         ///   Sucht eine lokalisierte Zeichenfolge, die CampusMapAppQRCodeSearchResultStorageKey ähnelt.
         /// </summary>
diff --git a/CampusAppWP8/CampusAppWP8/Utility/Wp8StringManager.cs b/CampusAppWP8/CampusAppWP8/Utility/Wp8StringManager.cs
index fe0a7735..27c5b2a5 100644
--- a/CampusAppWP8/CampusAppWP8/Utility/Wp8StringManager.cs
+++ b/CampusAppWP8/CampusAppWP8/Utility/Wp8StringManager.cs
@@ -25,5 +25,19 @@ namespace CampusAppWP8.Utility
         {
             return System.Net.HttpUtility.HtmlDecode(Wp8StringManager.StripHTML(inputString));
         }
+
+        /// <summary> Query if 'content' is a valid btuqr tag. </summary>
+        /// <remarks> Stubbfel, 16.10.2013. </remarks>
+        /// <param name="content"> The content. </param>
+        /// <returns> true if btuqr tag, false if not. </returns>
+        public static bool IsBTUQRTag(string content)
+        {
+            if (content != null && content.StartsWith(Constants.BTUTAG_QRStart))
+            {
+                return true;
+            }
+
+            return false;
+        }
     }
 }