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diff --git a/LibOVR/Src/CAPI/CAPI_GlobalState.cpp b/LibOVR/Src/CAPI/CAPI_GlobalState.cpp
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+/************************************************************************************
+
+Filename    :   CAPI_GlobalState.cpp
+Content     :   Maintains global state of the CAPI
+Created     :   January 24, 2014
+Authors     :   Michael Antonov
+
+Copyright   :   Copyright 2014 Oculus VR, Inc. All Rights reserved.
+
+Licensed under the Oculus VR Rift SDK License Version 3.1 (the "License"); 
+you may not use the Oculus VR Rift SDK except in compliance with the License, 
+which is provided at the time of installation or download, or which 
+otherwise accompanies this software in either electronic or hard copy form.
+
+You may obtain a copy of the License at
+
+http://www.oculusvr.com/licenses/LICENSE-3.1 
+
+Unless required by applicable law or agreed to in writing, the Oculus VR SDK 
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+
+************************************************************************************/
+
+#include "CAPI_GlobalState.h"
+
+namespace OVR { namespace CAPI {
+
+
+//-------------------------------------------------------------------------------------
+// Open Questions / Notes
+
+// 2. Detect HMDs.
+// Challenge: If we do everything through polling, it would imply we want all the devices
+//            initialized. However, there may be multiple rifts, extra sensors, etc,
+//            which shouldn't be allocated.
+// 
+
+// How do you reset orientation Quaternion?
+// Can you change IPD?
+
+
+
+//-------------------------------------------------------------------------------------
+// ***** OVRGlobalState
+
+// Global instance
+GlobalState* GlobalState::pInstance = 0;
+
+
+GlobalState::GlobalState()
+{
+    pManager = *DeviceManager::Create();
+    // Handle the DeviceManager's messages
+    pManager->AddMessageHandler( this );
+    EnumerateDevices();
+
+    // PhoneSensors::Init();
+}
+
+GlobalState::~GlobalState()
+{
+    RemoveHandlerFromDevices();
+    OVR_ASSERT(HMDs.IsEmpty());
+}
+
+int GlobalState::EnumerateDevices()
+{
+    // Need to use separate lock for device enumeration, as pManager->GetHandlerLock()
+    // would produce deadlocks here.
+    Lock::Locker lock(&EnumerationLock);
+    
+    EnumeratedDevices.Clear();        
+
+    DeviceEnumerator<HMDDevice> e = pManager->EnumerateDevices<HMDDevice>();
+    while(e.IsAvailable())
+    {
+        EnumeratedDevices.PushBack(DeviceHandle(e));       
+        e.Next();
+    }
+
+    return (int)EnumeratedDevices.GetSize();
+}
+
+
+HMDDevice* GlobalState::CreateDevice(int index)
+{
+    Lock::Locker lock(&EnumerationLock);
+
+    if (index >= (int)EnumeratedDevices.GetSize())
+        return 0;
+    return EnumeratedDevices[index].CreateDeviceTyped<HMDDevice>();
+}
+
+
+void GlobalState::AddHMD(HMDState* hmd)
+{
+    Lock::Locker lock(pManager->GetHandlerLock());
+    HMDs.PushBack(hmd);
+}
+void GlobalState::RemoveHMD(HMDState* hmd)
+{
+    Lock::Locker lock(pManager->GetHandlerLock());
+    hmd->RemoveNode();
+}
+
+void GlobalState::NotifyHMDs_AddDevice(DeviceType deviceType)
+{
+    Lock::Locker lock(pManager->GetHandlerLock());
+    for(HMDState* hmd = HMDs.GetFirst(); !HMDs.IsNull(hmd); hmd = hmd->pNext)        
+        hmd->NotifyAddDevice(deviceType);
+}
+
+void GlobalState::OnMessage(const Message& msg)
+{
+    if (msg.Type == Message_DeviceAdded || msg.Type == Message_DeviceRemoved)
+    {       
+        if (msg.pDevice == pManager)
+        {   
+            const MessageDeviceStatus& statusMsg =
+                static_cast<const MessageDeviceStatus&>(msg);
+
+            if (msg.Type == Message_DeviceAdded)
+            {
+                //LogText("OnMessage DeviceAdded.\n");
+
+                // We may have added a sensor/other device; notify any HMDs that might
+                // need it to check for it later.
+                NotifyHMDs_AddDevice(statusMsg.Handle.GetType());
+            }
+            else
+            {
+                //LogText("OnMessage DeviceRemoved.\n");
+            }
+        }
+    }
+}
+
+
+}} // namespace OVR::CAPI