diff --git a/src/gui/src/CoreInterface.cpp b/src/gui/src/CoreInterface.cpp
index 9bc8d132..1a917382 100644
--- a/src/gui/src/CoreInterface.cpp
+++ b/src/gui/src/CoreInterface.cpp
@@ -71,6 +71,12 @@ QString CoreInterface::checkSubscription()
 	return run(args);
 }
 
+QString CoreInterface::notifyActivation(const QString& input)
+{
+	QStringList args("--notify-activation");
+	return run(args, input);
+}
+
 QString CoreInterface::run(const QStringList& args, const QString& input)
 {
 	QString program(
diff --git a/src/gui/src/CoreInterface.h b/src/gui/src/CoreInterface.h
index dc2f9fb6..4949bddc 100644
--- a/src/gui/src/CoreInterface.h
+++ b/src/gui/src/CoreInterface.h
@@ -31,5 +31,6 @@ public:
 	QString getSubscriptionFilename();
 	QString activateSerial(const QString& serial);
 	QString checkSubscription();
+	QString notifyActivation(const QString& input);
 	QString run(const QStringList& args, const QString& input = "");
 };
diff --git a/src/gui/src/SetupWizard.cpp b/src/gui/src/SetupWizard.cpp
index cc8fd9ca..bbe14328 100644
--- a/src/gui/src/SetupWizard.cpp
+++ b/src/gui/src/SetupWizard.cpp
@@ -216,6 +216,17 @@ void SetupWizard::accept()
 	if (m_pRadioButtonSubscription->isChecked())
 	{
 		appConfig.setSerialKey(m_pLineEditSerialKey->text());
+
+		QString info("serial:" + hash(getFirstMacAddress()) + "\n");
+		CoreInterface coreInterface;
+		coreInterface.notifyActivation(info);
+	}
+
+	if (m_pRadioButtonSkip->isChecked())
+	{
+		QString info("skip:" + hash(getFirstMacAddress()) + "\n");
+		CoreInterface coreInterface;
+		coreInterface.notifyActivation(info);
 	}
 
 	m_MainWindow.setEdition(m_Edition);
diff --git a/src/gui/src/WebClient.cpp b/src/gui/src/WebClient.cpp
index 6de6d9ca..c231c970 100644
--- a/src/gui/src/WebClient.cpp
+++ b/src/gui/src/WebClient.cpp
@@ -94,6 +94,6 @@ QString WebClient::request(
 {
 	QStringList args("--login-auth");
 	// hash password in case it contains interesting chars.
-	QString credentials(email + ":" + hash(password) + "\n");
+	QString credentials(email + ":" + hash(password) + ":" + hash(getFirstMacAddress()) + "\n");
 	return m_CoreInterface.run(args, credentials);
 }
diff --git a/src/lib/synergy/ArgParser.cpp b/src/lib/synergy/ArgParser.cpp
index 92185b26..ba0a103c 100644
--- a/src/lib/synergy/ArgParser.cpp
+++ b/src/lib/synergy/ArgParser.cpp
@@ -211,6 +211,10 @@ ArgParser::parseToolArgs(ToolArgs& args, int argc, const char* const* argv)
 			args.m_checkSubscription = true;
 			return true;
 		}
+		else if (isArg(i, argc, argv, NULL, "--notify-activation", 0)) {
+			args.m_notifyActivation = true;
+			return true;
+		}
 		else {
 			return false;
 		}
diff --git a/src/lib/synergy/ToolApp.cpp b/src/lib/synergy/ToolApp.cpp
index f6cd2ef5..436db09d 100644
--- a/src/lib/synergy/ToolApp.cpp
+++ b/src/lib/synergy/ToolApp.cpp
@@ -117,6 +117,9 @@ ToolApp::run(int argc, char** argv)
 				return kExitSubscription;
 			}
 		}
+		else if (m_args.m_notifyActivation) {
+			notifyActivation();
+		}
 		else {
 			throw XSynergy("Nothing to do");
 		}
@@ -149,14 +152,17 @@ ToolApp::loginAuth()
 	String credentials;
 	std::cin >> credentials;
 
-	size_t separator = credentials.find(':');
-	String email = credentials.substr(0, separator);
-	String password = credentials.substr(separator + 1, credentials.length());
+	size_t separator1 = credentials.find(':');
+	size_t separator2 = credentials.find(':', separator1 + 1);
+	String email = credentials.substr(0, separator1);
+	String password = credentials.substr(separator1 + 1, separator2 - separator1 - 1);
+	String macHash = credentials.substr(separator2 + 1, credentials.length() - separator2 - 1);
 
 	std::stringstream ss;
 	ss << JSON_URL << "auth/";
 	ss << "?email=" << ARCH->internet().urlEncode(email);
 	ss << "&password=" << password;
+	ss << "&mac=" << macHash;
 	ss << "&os=" << ARCH->internet().urlEncode(ARCH->getOSName());
 	ss << "&arch=" << ARCH->internet().urlEncode(ARCH->getPlatformName());
 
@@ -179,4 +185,24 @@ ToolApp::getPluginList()
 	ss << "&password=" << password;
 
 	std::cout << ARCH->internet().get(ss.str()) << std::endl;
-}
\ No newline at end of file
+}
+
+void 
+ToolApp::notifyActivation()
+{
+	String info;
+	std::cin >> info;
+
+	size_t separator = info.find(':');
+	String action = info.substr(0, separator);
+	String macHash = info.substr(separator + 1, info.length());
+
+	std::stringstream ss;
+	ss <<  JSON_URL << "notify/";
+	ss << "?action=" << action;
+	ss << "&mac=" << macHash;
+	ss << "&os=" << ARCH->internet().urlEncode(ARCH->getOSName());
+	ss << "&arch=" << ARCH->internet().urlEncode(ARCH->getPlatformName());
+
+	std::cout << ARCH->internet().get(ss.str()) << std::endl;
+}
diff --git a/src/lib/synergy/ToolApp.h b/src/lib/synergy/ToolApp.h
index 08947c6e..7f0b6ea7 100644
--- a/src/lib/synergy/ToolApp.h
+++ b/src/lib/synergy/ToolApp.h
@@ -30,6 +30,7 @@ public:
 private:
 	void				loginAuth();
 	void				getPluginList();
+	void				notifyActivation();
 
 private:
 	ToolArgs			m_args;
diff --git a/src/lib/synergy/ToolArgs.cpp b/src/lib/synergy/ToolArgs.cpp
index 0fd68a92..23439317 100644
--- a/src/lib/synergy/ToolArgs.cpp
+++ b/src/lib/synergy/ToolArgs.cpp
@@ -27,6 +27,7 @@ ToolArgs::ToolArgs() :
 	m_getArch(false),
 	m_getSubscriptionFilename(false),
 	m_checkSubscription(false),
+	m_notifyActivation(false),
 	m_subscriptionSerial()
 {
 }
diff --git a/src/lib/synergy/ToolArgs.h b/src/lib/synergy/ToolArgs.h
index ffbf932e..fb0b3e78 100644
--- a/src/lib/synergy/ToolArgs.h
+++ b/src/lib/synergy/ToolArgs.h
@@ -33,5 +33,6 @@ public:
 	bool				m_getArch;
 	bool				m_getSubscriptionFilename;
 	bool				m_checkSubscription;
+	bool				m_notifyActivation;
 	String				m_subscriptionSerial;
 };