diff --git a/UsbDk/ControlDevice.cpp b/UsbDk/ControlDevice.cpp
index 49097f7..74cd2c4 100644
--- a/UsbDk/ControlDevice.cpp
+++ b/UsbDk/ControlDevice.cpp
@@ -1120,6 +1120,12 @@ void CUsbDkRedirection::Dump(LPCSTR message) const
                 m_DeviceID, m_InstanceID);
 }
 
+bool CUsbDkRedirection::MatchProcess(ULONG pid)
+{
+    TraceEvents(TRACE_LEVEL_INFORMATION, TRACE_WDFDEVICE, "%!FUNC! pid 0x%X, owner 0x%X", pid, m_OwnerPid);
+    return pid == m_OwnerPid;
+}
+
 void CUsbDkRedirection::NotifyRedirectorCreated(CUsbDkFilterDevice *RedirectorDevice)
 {
     TraceEvents(TRACE_LEVEL_ERROR, TRACE_WDFDEVICE, "%!FUNC! Redirector created for");
@@ -1209,6 +1215,9 @@ NTSTATUS CUsbDkRedirection::CreateRedirectorHandle(HANDLE RequestorProcess, PHAN
         status = m_RedirectorDevice->CreateUserModeHandle(RequestorProcess, ObjectHandle);
         if (NT_SUCCESS(status))
         {
+            ULONG pid = (ULONG)(ULONG_PTR)PsGetCurrentProcessId();
+            TraceEvents(TRACE_LEVEL_INFORMATION, TRACE_WDFDEVICE, "%!FUNC! done for process 0x%X", pid);
+            m_OwnerPid = pid;
             return status;
         }
 
diff --git a/UsbDk/ControlDevice.h b/UsbDk/ControlDevice.h
index e612050..7e7cd0f 100644
--- a/UsbDk/ControlDevice.h
+++ b/UsbDk/ControlDevice.h
@@ -190,6 +190,8 @@ public:
     bool IsPreparedForRemove() const
     { return m_RemovalInProgress; }
 
+    bool MatchProcess(ULONG pid);
+
     NTSTATUS WaitForAttachment()
     { return m_RedirectionCreated.Wait(true, -SecondsTo100Nanoseconds(120)); }
 
@@ -216,6 +218,7 @@ private:
     CWdmEvent m_RedirectionCreated;
     CWdmEvent m_RedirectionRemoved;
     CUsbDkFilterDevice *m_RedirectorDevice = nullptr;
+    ULONG m_OwnerPid = 0;
 
     bool m_RemovalInProgress = false;