diff --git a/code/ryzom/client/src/far_tp.cpp b/code/ryzom/client/src/far_tp.cpp
index a7a41c628..bd313b830 100644
--- a/code/ryzom/client/src/far_tp.cpp
+++ b/code/ryzom/client/src/far_tp.cpp
@@ -189,7 +189,7 @@ const std::string& CLoginStateMachine::toString(CLoginStateMachine::TEvent event
 			break;						\
 		}								\
 
-extern std::string LoginLogin, LoginPassword;
+extern std::string LoginLogin, LoginPassword, LoginCustomParameters;
 extern bool noUserChar;
 extern bool userChar;
 extern bool serverReceivedReady;
@@ -248,12 +248,24 @@ void CLoginStateMachine::run()
 			{
 				if (LoginLogin.empty())
 				{
-					// standard procedure
-					SM_BEGIN_EVENT_TABLE
-						SM_EVENT(ev_init_done, st_login);
-						SM_EVENT(ev_skip_all_login, st_ingame);
-						SM_EVENT(ev_quit, st_end);
-					SM_END_EVENT_TABLE
+					if (LoginCustomParameters.empty())
+					{
+						// standard procedure
+						SM_BEGIN_EVENT_TABLE
+							SM_EVENT(ev_init_done, st_login);
+							SM_EVENT(ev_skip_all_login, st_ingame);
+							SM_EVENT(ev_quit, st_end);
+						SM_END_EVENT_TABLE
+					}
+					else
+					{
+						// alternate login procedure
+						SM_BEGIN_EVENT_TABLE
+							SM_EVENT(ev_init_done, st_alt_login);
+							SM_EVENT(ev_skip_all_login, st_ingame);
+							SM_EVENT(ev_quit, st_end);
+						SM_END_EVENT_TABLE
+					}
 				}
 				else
 				{
@@ -325,6 +337,27 @@ void CLoginStateMachine::run()
 //						SM_EVENT(ev_login_ok, st_check_patch);
 //						SM_EVENT(ev_quit, st_end);
 //					SM_END_EVENT_TABLE
+//				}
+			break;
+		case st_alt_login:
+			initAltLogin();
+
+//				if (ClientCfg.R2Mode)
+			{
+				// r2 mode
+				SM_BEGIN_EVENT_TABLE
+					SM_EVENT(ev_login_not_alt, st_login);
+					SM_EVENT(ev_login_ok, st_check_patch);
+					SM_EVENT(ev_quit, st_end);
+				SM_END_EVENT_TABLE
+			}
+//				else
+//				{
+//					// legacy mode
+//					SM_BEGIN_EVENT_TABLE
+//						SM_EVENT(ev_login_ok, st_check_patch);
+//						SM_EVENT(ev_quit, st_end);
+//					SM_END_EVENT_TABLE
 //				}
 			break;
 		case st_shard_list:
diff --git a/code/ryzom/client/src/far_tp.h b/code/ryzom/client/src/far_tp.h
index cec696ba3..a4c8f77b4 100644
--- a/code/ryzom/client/src/far_tp.h
+++ b/code/ryzom/client/src/far_tp.h
@@ -81,6 +81,8 @@ public:
 		st_rate_session,
 		/// create account
 		st_create_account,
+		/// try to login with alternate login system
+		st_alt_login,
 		/// pseudo state to leave the state machine
 		st_end,
 		///
@@ -156,6 +158,8 @@ public:
 		ev_create_account,
 		/// the client push the 'create account' button
 		ev_close_create_account,
+		/// the client want to use alternate login system
+		ev_login_not_alt,
 		///
 		ev_unknown
 	};
@@ -203,6 +207,7 @@ void initEula();
 void initPatchCheck();
 void initCatDisplay();
 void initAutoLogin();
+void initAltLogin();
 void initPatch();
 //void initWebBrowser();
 void initReboot();
diff --git a/code/ryzom/client/src/login.cpp b/code/ryzom/client/src/login.cpp
index 80e184efe..109f9417e 100644
--- a/code/ryzom/client/src/login.cpp
+++ b/code/ryzom/client/src/login.cpp
@@ -842,6 +842,55 @@ void initAutoLogin()
 	}
 }
 
+void initAltLogin()
+{
+	// Check the alt param
+	if (!LoginCustomParameters.empty())
+	{
+		// don't use login and password for alternate login
+		string res = checkLogin("", "", ClientApp, LoginCustomParameters);
+		if (res.empty())
+		{
+			if (ClientCfg.R2Mode)
+			{
+				LoginSM.pushEvent(CLoginStateMachine::ev_login_ok);
+			}
+			else
+			{
+				// Select good shard
+				ShardSelected = -1;
+				for (uint32 i = 0; i < Shards.size(); ++i)
+				{
+					if (Shards[i].ShardId == LoginShardId)
+					{
+						ShardSelected = i;
+						break;
+					}
+				}
+
+				if (ShardSelected == -1)
+				{
+					CInterfaceManager *pIM = CInterfaceManager::getInstance();
+					pIM->messageBoxWithHelp(CI18N::get("uiErrServerLost"), "ui:login");
+					LoginSM.pushEvent(CLoginStateMachine::ev_quit);
+				}
+				else
+				{
+					LoginSM.pushEvent(CLoginStateMachine::ev_login_ok);
+				}
+			}
+
+			return;
+		}
+	}
+
+	// close the socket in case of error
+	HttpClient.disconnect();
+
+	// ignore error
+	LoginSM.pushEvent(CLoginStateMachine::ev_login_not_alt);
+}
+
 
 // ***************************************************************************
 // Called from client.cpp
@@ -2732,49 +2781,63 @@ string checkLogin(const string &login, const string &password, const string &cli
 
 	string res;
 
-	// ask server for salt
-	if(!HttpClient.sendGet(ClientCfg.ConfigFile.getVar("StartupPage").asString()+"?cmd=ask&login="+login+"&lg="+ClientCfg.LanguageCode, "", pPM->isVerboseLog()))
-		return "Can't send (error code 60)";
-
-	if(pPM->isVerboseLog()) nlinfo("Sent request for password salt");
-
-	if(!HttpClient.receive(res, pPM->isVerboseLog()))
-		return "Can't receive (error code 61)";
-
-	if(pPM->isVerboseLog()) nlinfo("Received request login check");
-
-	if(res.empty())
-		return "Empty answer from server (error code 62)";
-
-	if(res[0] == '0')
+	// don't use login with alt method
+	if (!login.empty())
 	{
-		// server returns an error
-		nlwarning("server error: %s", res.substr(2).c_str());
-		return res.substr(2);
-	}
-	else if(res[0] == '1')
-	{
-		Salt = res.substr(2);
-	}
-	else
-	{
-		// server returns ???
-		nlwarning("%s", res.c_str());
-		return res;
-	}
+		// ask server for salt
+		if(!HttpClient.sendGet(ClientCfg.ConfigFile.getVar("StartupPage").asString()+"?cmd=ask&login="+login+"&lg="+ClientCfg.LanguageCode, "", pPM->isVerboseLog()))
+			return "Can't send (error code 60)";
 
-	// send login + crypted password + client app and cp=1 (as crypted password)
-	if(!HttpClient.connectToLogin())
-		return "Can't connect (error code 63)";
+		if(pPM->isVerboseLog()) nlinfo("Sent request for password salt");
 
-	if(pPM->isVerboseLog()) nlinfo("Connected");
+		if(!HttpClient.receive(res, pPM->isVerboseLog()))
+			return "Can't receive (error code 61)";
+
+		if(pPM->isVerboseLog()) nlinfo("Received request login check");
+
+		if(res.empty())
+			return "Empty answer from server (error code 62)";
+
+		if(res[0] == '0')
+		{
+			// server returns an error
+			nlwarning("server error: %s", res.substr(2).c_str());
+			return res.substr(2);
+		}
+		else if(res[0] == '1')
+		{
+			Salt = res.substr(2);
+		}
+		else
+		{
+			// server returns ???
+			nlwarning("%s", res.c_str());
+			return res;
+		}
+
+		// send login + crypted password + client app and cp=1 (as crypted password)
+		if(!HttpClient.connectToLogin())
+			return "Can't connect (error code 63)";
+
+		if(pPM->isVerboseLog()) nlinfo("Connected");
+	}
 
 	if (ClientCfg.R2Mode)
 	{
 		// R2 login sequence
-		std::string	cryptedPassword = CCrypt::crypt(password, Salt);
-		if(!HttpClient.sendGet(ClientCfg.ConfigFile.getVar("StartupPage").asString()+"?cmd=login&login="+login+"&password="+cryptedPassword+"&clientApplication="+clientApp+"&cp=1"+"&lg="+ClientCfg.LanguageCode+customParameters))
-			return "Can't send (error code 2)";
+
+		if (!login.empty())
+		{
+			std::string	cryptedPassword = CCrypt::crypt(password, Salt);
+			if(!HttpClient.sendGet(ClientCfg.ConfigFile.getVar("StartupPage").asString()+"?cmd=login&login="+login+"&password="+cryptedPassword+"&clientApplication="+clientApp+"&cp=1"+"&lg="+ClientCfg.LanguageCode+customParameters))
+				return "Can't send (error code 2)";
+		}
+		else
+		{
+			// don't send login and password if empty
+			if(!HttpClient.sendGet(ClientCfg.ConfigFile.getVar("StartupPage").asString()+"?cmd=login&clientApplication="+clientApp+"&cp=1"+"&lg="+ClientCfg.LanguageCode+customParameters))
+				return "Can't send (error code 2)";
+		}
 
 		// the response should contains the result code and the cookie value
 		if(pPM->isVerboseLog()) nlinfo("Sent request login check");