diff --git a/DongleSN.cpp b/DongleSN.cpp
new file mode 100644
index 0000000..82e37da
--- /dev/null
+++ b/DongleSN.cpp
@@ -0,0 +1,64 @@
+//----------------------------------------------------------------------------
+//  EgalTech 2019-2019
+//----------------------------------------------------------------------------
+// File : DongleSN.cpp       Data : 13.05.18          Versione : 2.1e1
+// Contenuto : Funzioni per lettura SN chiave OxySec.
+//
+//
+//
+// Modifiche : 13.05.18 DS Creazione modulo.
+//
+//
+//----------------------------------------------------------------------------
+
+//------------------ Include -------------------------------------------------
+#include "stdafx.h"
+#include "Obfuscate.h"
+#include "DongleId.h"
+#include "/EgtDev/Include/EgtBase64.h"
+#include "/EgtDev/Include/EgtCrc32.h"
+#include "/EgtDev/Extern/OxySec/Include/xnd.h"
+
+using namespace std ;
+
+//----------------------------------------------------------------------------
+bool
+GetDongleSN( int& nDongleSN)
+{
+  // imposto l'esito
+   bool bOk = true ;
+  // cerco la chiave
+   unsigned char label[XLT_LABEL_SIZE] ;
+   string sLabel = "EgalTech s.r.l. - CAD/CAM/CIM Software Solutions" ;
+   strcpy_s( (char*)label, XLT_LABEL_SIZE, sLabel.c_str()) ;
+   memset( label + sLabel.size(), 0x00, sizeof( label) - sLabel.size()) ;
+   XND_XLT_ENV env = xnd_xlt_env_create() ;
+   if ( env == nullptr) {
+      bOk = false ;
+      goto end ;
+   }
+   int nStatus = 0 ;
+   XND_DEVICE_CONTEXT dev_ctx = xnd_xlt_locate( env, label, &nStatus) ;
+   if ( dev_ctx == nullptr) {
+      bOk = false ;
+      goto end ;
+   }
+  // eseguo la lettura del Serial Number
+   unsigned int nVer ;
+   unsigned int nModel ;
+   unsigned int nFlags ;
+   unsigned int nSerial ;
+   unsigned char szLabelPrint[XLT_LABEL_SIZE + 1] ;
+   int nRes = xnd_xlt_getinfo( dev_ctx, &nVer, &nModel, &nFlags, &nSerial, szLabelPrint) ;
+   if ( nRes != XLT_ERROR_SUCCESS) {
+      bOk = false ;
+      goto end ;
+   }
+   szLabelPrint[XLT_LABEL_SIZE] = '\0' ;
+   nDongleSN = int( nSerial) ;
+
+   end :
+      xnd_xlt_devctx_release( dev_ctx) ;
+      xnd_xlt_env_release( env) ;
+      return bOk ;
+}
diff --git a/DongleSN.h b/DongleSN.h
new file mode 100644
index 0000000..1c2a5a4
--- /dev/null
+++ b/DongleSN.h
@@ -0,0 +1,17 @@
+//----------------------------------------------------------------------------
+//  EgalTech 2019-2019
+//----------------------------------------------------------------------------
+// File : DongleSN.h         Data : 13.05.18          Versione : 2.1e1
+// Contenuto : Dichiarazione funzioni locali per lettura SN chiave.
+//
+//
+//
+// Modifiche : 13.05.18 DS Creazione modulo.
+//
+//
+//----------------------------------------------------------------------------
+
+#pragma once
+
+//-------------------------------------------------------------------------------
+bool GetDongleSN( int& nDongleSN) ;
diff --git a/EgtLock.vcxproj b/EgtLock.vcxproj
index 8f63f92..8e98edc 100644
--- a/EgtLock.vcxproj
+++ b/EgtLock.vcxproj
@@ -192,6 +192,7 @@ copy $(TargetDir)$(TargetName).lib \EgtDev\Lib\</Command>
   </ItemGroup>
   <ItemGroup>
     <ClCompile Include="DongleId.cpp" />
+    <ClCompile Include="DongleSN.cpp" />
     <ClCompile Include="MachineId.cpp" />
     <ClCompile Include="Obfuscate.cpp" />
     <ClCompile Include="KeyProc.cpp" />
diff --git a/EgtLock.vcxproj.filters b/EgtLock.vcxproj.filters
index 4a9ba75..0a6ecbc 100644
--- a/EgtLock.vcxproj.filters
+++ b/EgtLock.vcxproj.filters
@@ -71,5 +71,8 @@
     <ClCompile Include="LockId.cpp">
       <Filter>File di origine</Filter>
     </ClCompile>
+    <ClCompile Include="DongleSN.cpp">
+      <Filter>File di origine</Filter>
+    </ClCompile>
   </ItemGroup>
 </Project>
\ No newline at end of file
diff --git a/LockId.cpp b/LockId.cpp
index 07fccf4..8a4d47b 100644
--- a/LockId.cpp
+++ b/LockId.cpp
@@ -15,6 +15,7 @@
 #include "stdafx.h"
 #include "MachineId.h"
 #include "DongleId.h"
+#include "DongleSN.h"
 #include "Obfuscate.h"
 #include "/EgtDev/Include/EgtBase64.h"
 #include "/EgtDev/Include/EgtCrc32.h"
@@ -131,3 +132,23 @@ ConvertLockId2ToScramKey( const string& sLockId2, string& sScramKey)
    AddCrc32ToString( sScramKey) ;
    return true ;
 }
+
+//----------------------------------------------------------------------------
+bool
+GetLockSN( int& nLockSN)
+{
+   switch ( s_nLockType) {
+   default :     // KEY_LOCK_TYPE_ANY 
+      if ( GetDongleSN( nLockSN))
+         return true ;
+      else {
+         nLockSN = 0 ;
+         return false ;
+      }
+   case KEY_LOCK_TYPE_SW :
+      nLockSN = 0 ;
+      return false ;
+   case KEY_LOCK_TYPE_HW :
+      return GetDongleSN( nLockSN) ;
+   }
+}