not run app again when read nfc tag

------------------------------------------------------------------- Manifest File -------------------------------------------------------------

 <activity android:name="com.unity3d.player.UnityPlayerActivity" android:label="@string/app_name" android:screenOrientation="portrait" android:launchMode="singleTask" android:configChanges="mcc|mnc|locale|touchscreen|keyboard|keyboardHidden|navigation|orientation|screenLayout|uiMode|screenSize|smallestScreenSize|fontScale|layoutDirection|density" android:hardwareAccelerated="false">
   <intent-filter>
     <action android:name="android.intent.action.MAIN" />
     <category android:name="android.intent.category.LAUNCHER" />

   </intent-filter>
   
   <intent-filter>
     <action android:name="android.nfc.action.NDEF_DISCOVERED"/>

     <action android:name="android.nfc.action.TECH_DISCOVERED"/>
     
     <action android:name="android.nfc.action.TAG_DISCOVERED"/>
     
     <category android:name="android.intent.category.DEFAULT"/>
   </intent-filter>

   <meta-data android:name="android.nfc.action.TECH_DISCOVERED" android:value="true" android:resource="@xml/nfc_tech_filter"/>
   <meta-data android:name="unityplayer.UnityActivity" android:value="true" />
 </activity>

 <meta-data android:name="unity.build-id" android:value="dd24cbfb-4841-44c5-bd24-7e233c3ae163" />
 <meta-data android:name="unity.splash-mode" android:value="0" />
 <meta-data android:name="unity.splash-enable" android:value="True" />

  

  
  
  
  
  
  
  

----------------------------------------------------------- Code ------------------------------------------------------------------------------

             mActivity = new AndroidJavaClass("com.unity3d.player.UnityPlayer").GetStatic<AndroidJavaObject>("currentActivity"); // Activities open apps
             mIntent = mActivity.Call<AndroidJavaObject>("getIntent");
             sAction = mIntent.Call<String>("getAction"); // resulte are returned in the Intent object

             if (sAction == "android.nfc.action.TECH_DISCOVERED")
             {
                 // Debug.Log("TAG DISCOVERED");
                 // Get ID of tag
                 AndroidJavaObject mNdefMessage = mIntent.Call<AndroidJavaObject>("getParcelableExtra", "android.nfc.extra.TAG");
                 if (mNdefMessage != null)
                 {
                     byte[] payLoad = mNdefMessage.Call<byte[]>("getId");
                     string text = ByteToString(payLoad);
                     //tag_output_text.text += "This is your tag text: " + text;
                     //Destroy(GetComponent("MeshRenderer")); //Destroy Box when NFC ID is displayed
                     //tagID = text;
                     tag_output_text.text = text;
                 }
                 else
                 {
                     tag_output_text.text = "Not Found";
                 }
                 //tagFound = true;
                 // How to read multiple tags maybe with this line 
                 //mIntent.Call("removeExtra", "android.nfc.extra.TAG");
                 return;
             }