diff --git a/namedropper/Assets/TrackballInputManager.cs b/namedropper/Assets/TrackballInputManager.cs
index a8879e5..96e8025 100644
--- a/namedropper/Assets/TrackballInputManager.cs
+++ b/namedropper/Assets/TrackballInputManager.cs
@@ -8,7 +8,7 @@ using UnityEngine.UI;
 
 public class TrackballInputManager : MonoBehaviour
 {
-    const float defaultMiceSensitivity = 1f;
+    const float defaultMiceSensitivity = 2f;
     const float upMultiplier = .5f;
     const float accelerationThreshold = 40;
     const float accelerationMultiplier = 2;
@@ -26,6 +26,8 @@ public class TrackballInputManager : MonoBehaviour
     public const byte RE_MOUSE = 2;
     public const byte RE_DEVICE_DISCONNECT = 1;
 
+    List<int> _ignoredDevices = new List<int>();
+
     [StructLayout(LayoutKind.Sequential)]
     public struct RawInputEvent
     {
@@ -44,29 +46,37 @@ public class TrackballInputManager : MonoBehaviour
         public int playerID;
         public float sensitivity;
     }
-    public static TrackballInputManager instance;
+    //public static TrackballInputManager instance;
 
     [SerializeField] List<Player> _players;
     // Start is called before the first frame update
     void Start()
     {
-        instance = this;
-        bool res = init();
-        Debug.Log("Init() ==> " + res);
+        //instance = this;
+        if (isInit == false)
+        {
+            bool res = init();
+            Debug.Log("Init() ==> " + res);
+            isInit = true;
+        }
         //Debug.Log(Marshal.SizeOf(typeof(RawInputEvent)));
         //canvas = GetComponent<Canvas>();
         //canvasRect = GetComponent<RectTransform>();
         Cursor.lockState = CursorLockMode.Locked;
         Cursor.visible = false;
+
+        _ignoredDevices.Add(4468289);
     }
 
     public void OnDestroy()
     {
-        instance = null;
+        //instance = null;
+        kill();
+        isInit = false;
     }
 
     int lastEvents = 0;
-    bool isInit = true;
+    static bool isInit = false;
 
     void Update()
     {
@@ -112,8 +122,11 @@ public class TrackballInputManager : MonoBehaviour
                 }
                 else
                 {
-                    Debug.Log("Unknown device found");
-                    AddPlayer(ev.devHandle);
+                    if (_ignoredDevices.Contains(ev.devHandle) == false)
+                    {
+                        Debug.Log("Unknown device found");
+                        AddPlayer(ev.devHandle);
+                    }
                 }
             }
         }
@@ -133,6 +146,9 @@ public class TrackballInputManager : MonoBehaviour
     int AddPlayer(int deviceId)
     {
 
+        if (_ignoredDevices.Contains(deviceId))
+            return -1;
+
         if (!isInit)
         {
             Debug.LogError("Not initialized");