diff --git a/daemon/daemon.cc b/daemon/daemon.cc
index ba1fecc..fad4017 100644
--- a/daemon/daemon.cc
+++ b/daemon/daemon.cc
@@ -21,60 +21,97 @@
 
 #include "db-helper.h"
 #include <iostream>
+#include <Ice/Service.h>
+#include <Ice/Identity.h>
+
+#include "notify-i.h"
 
 using namespace std;
 using namespace boost;
+using namespace ChronoshareClient;
 
 typedef boost::error_info<struct tag_errmsg, std::string> errmsg_info_str; 
 
+class MyService : public Ice::Service
+{
+protected:
+  virtual bool start (int, char*[], int&)
+  {
+    _adapter = communicator ()->createObjectAdapterWithEndpoints ("ChronoShare", "default -p 55436");
+
+    Ice::Identity identity;
+    identity.name="NotifyDaemon";
+    NotifyPtr servant=new NotifyI;
+    
+    _adapter->add (servant, identity);
+    
+    _adapter->activate();
+    // status = EXIT_SUCCESS;
+    return true;    
+  }
+  
+private:
+    Ice::ObjectAdapterPtr _adapter;  
+};
 
 int
 main (int argc, char **argv)
 {
+  int status = 0;
+  
   try
     {
       DbHelper db ("./");
 
-      HashPtr hash = db.RememberStateInStateLog ();
-      // should be empty
-      cout << "Hash: [" << *hash << "]" << endl;
+      MyService svc;
+      status = svc.main (argc, argv);
 
-      //
-      db.UpdateDeviceSeqno ("Alex", 1);
-      hash = db.RememberStateInStateLog ();
-      cout << "Hash: [" << *hash << "]" << endl;
+      // HashPtr hash = db.RememberStateInStateLog ();
+      // // should be empty
+      // cout << "Hash: [" << *hash << "]" << endl;
 
-      db.UpdateDeviceSeqno ("Alex", 2);
-      hash = db.RememberStateInStateLog ();
-      cout << "Hash: [" << *hash << "]" << endl;
+      // //
+      // db.UpdateDeviceSeqno ("Alex", 1);
+      // hash = db.RememberStateInStateLog ();
+      // cout << "Hash: [" << *hash << "]" << endl;
 
-      db.UpdateDeviceSeqno ("Alex", 2);
-      hash = db.RememberStateInStateLog ();
-      cout << "Hash: [" << *hash << "]" << endl;
+      // db.UpdateDeviceSeqno ("Alex", 2);
+      // hash = db.RememberStateInStateLog ();
+      // cout << "Hash: [" << *hash << "]" << endl;
 
-      db.UpdateDeviceSeqno ("Alex", 1);
-      hash = db.RememberStateInStateLog ();
-      cout << "Hash: [" << *hash << "]" << endl;
+      // db.UpdateDeviceSeqno ("Alex", 2);
+      // hash = db.RememberStateInStateLog ();
+      // cout << "Hash: [" << *hash << "]" << endl;
 
-      db.FindStateDifferences ("00", "ec0a9941fa726e1fb8f34ecdbd8e3faa75dc9dba22e6a2ea1d8482aae5fdfb52");
-      db.FindStateDifferences ("ec0a9941fa726e1fb8f34ecdbd8e3faa75dc9dba22e6a2ea1d8482aae5fdfb52", "00");
-      db.FindStateDifferences ("869c38c6dffe8911ced320aecc6d9244904d13d3e8cd21081311f2129b4557ce",
-                               "ec0a9941fa726e1fb8f34ecdbd8e3faa75dc9dba22e6a2ea1d8482aae5fdfb52");
-      db.FindStateDifferences ("ec0a9941fa726e1fb8f34ecdbd8e3faa75dc9dba22e6a2ea1d8482aae5fdfb52",
-                               "869c38c6dffe8911ced320aecc6d9244904d13d3e8cd21081311f2129b4557ce");
+      // db.UpdateDeviceSeqno ("Alex", 1);
+      // hash = db.RememberStateInStateLog ();
+      // cout << "Hash: [" << *hash << "]" << endl;
 
-      db.UpdateDeviceSeqno ("Bob", 1);
-      hash = db.RememberStateInStateLog ();
-      cout << "Hash: [" << *hash << "]" << endl;
+      // db.FindStateDifferences ("00", "ec0a9941fa726e1fb8f34ecdbd8e3faa75dc9dba22e6a2ea1d8482aae5fdfb52");
+      // db.FindStateDifferences ("ec0a9941fa726e1fb8f34ecdbd8e3faa75dc9dba22e6a2ea1d8482aae5fdfb52", "00");
+      // db.FindStateDifferences ("869c38c6dffe8911ced320aecc6d9244904d13d3e8cd21081311f2129b4557ce",
+      //                          "ec0a9941fa726e1fb8f34ecdbd8e3faa75dc9dba22e6a2ea1d8482aae5fdfb52");
+      // db.FindStateDifferences ("ec0a9941fa726e1fb8f34ecdbd8e3faa75dc9dba22e6a2ea1d8482aae5fdfb52",
+      //                          "869c38c6dffe8911ced320aecc6d9244904d13d3e8cd21081311f2129b4557ce");
 
-      db.FindStateDifferences ("00", "48f4d95b503b9a79c2d5939fa67722b13fc01db861fc501d09efd0a38dbafab8");
-      db.FindStateDifferences ("ec0a9941fa726e1fb8f34ecdbd8e3faa75dc9dba22e6a2ea1d8482aae5fdfb52",
-                               "48f4d95b503b9a79c2d5939fa67722b13fc01db861fc501d09efd0a38dbafab8");
+      // db.UpdateDeviceSeqno ("Bob", 1);
+      // hash = db.RememberStateInStateLog ();
+      // cout << "Hash: [" << *hash << "]" << endl;
+
+      // db.FindStateDifferences ("00", "48f4d95b503b9a79c2d5939fa67722b13fc01db861fc501d09efd0a38dbafab8");
+      // db.FindStateDifferences ("ec0a9941fa726e1fb8f34ecdbd8e3faa75dc9dba22e6a2ea1d8482aae5fdfb52",
+      //                          "48f4d95b503b9a79c2d5939fa67722b13fc01db861fc501d09efd0a38dbafab8");
+    }
+  catch (const Ice::Exception& e)
+    {
+      cerr << e << endl;
+      status = 1;
     }
   catch (const boost::exception &e)
     {
       cout << "ERRORR: " << *get_error_info<errmsg_info_str> (e) << endl;
+      status = 1;
     }
 
-  return 0;
+  return status;
 }
diff --git a/daemon/notify-i.cc b/daemon/notify-i.cc
new file mode 100644
index 0000000..48ac56c
--- /dev/null
+++ b/daemon/notify-i.cc
@@ -0,0 +1,45 @@
+/* -*- Mode: C++; c-file-style: "gnu"; indent-tabs-mode:nil -*- */
+/*
+ * Copyright (c) 2013 University of California, Los Angeles
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation;
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *
+ * Author: Alexander Afanasyev <alexander.afanasyev@ucla.edu>
+ *	   Zhenkai Zhu <zhenkai@cs.ucla.edu>
+ */
+
+#include "notify-i.h"
+
+using namespace std;
+
+void
+NotifyI::updateFile (const ::std::string &filename,
+                     const ::ChronoshareClient::HashBytes &hash,
+                     const ::std::string &atime,
+                     const ::std::string &mtime,
+                     const ::std::string &ctime,
+                     ::Ice::Int mode,
+                     const ::Ice::Current&)
+{
+  cout << "updateFile " << filename << endl;
+}
+
+
+void
+NotifyI::deleteFile (const ::std::string &filename,
+                     const ::Ice::Current&)
+{
+  cout << "deleteFile " << filename << endl;
+}
+
diff --git a/daemon/notify-i.h b/daemon/notify-i.h
new file mode 100644
index 0000000..7afb0dd
--- /dev/null
+++ b/daemon/notify-i.h
@@ -0,0 +1,45 @@
+/* -*- Mode: C++; c-file-style: "gnu"; indent-tabs-mode:nil -*- */
+/*
+ * Copyright (c) 2013 University of California, Los Angeles
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation;
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *
+ * Author: Alexander Afanasyev <alexander.afanasyev@ucla.edu>
+ *	   Zhenkai Zhu <zhenkai@cs.ucla.edu>
+ */
+
+#ifndef NOTIFY_I_H
+#define NOTIFY_I_H
+
+#include <chronoshare-client.ice.h>
+
+class NotifyI : public ChronoshareClient::Notify
+{
+public:
+  virtual void
+  updateFile (const ::std::string &filename,
+              const ::ChronoshareClient::HashBytes &hash,
+              const ::std::string &atime,
+              const ::std::string &mtime,
+              const ::std::string &ctime,
+              ::Ice::Int mode,
+              const ::Ice::Current& = ::Ice::Current());
+
+  virtual void
+  deleteFile (const ::std::string &filename,
+              const ::Ice::Current& = ::Ice::Current());
+
+};
+
+#endif // NOTIFY_I_H