diff --git a/src/main/java/seng202/group9/Controller/App.java b/src/main/java/seng202/group9/Controller/App.java
index 86f3555..fb5006c 100644
--- a/src/main/java/seng202/group9/Controller/App.java
+++ b/src/main/java/seng202/group9/Controller/App.java
@@ -2,6 +2,7 @@ package seng202.group9.Controller;
 
 import java.io.IOException;
 import java.io.InputStream;
+import java.io.Serializable;
 import java.util.ArrayList;
 
 import javafx.application.Application;
@@ -113,6 +114,12 @@ public class App extends Application
 
 	}
 
+	/**
+	 * Serialize the exiting session
+	 */
+	public void stop(){
+
+	}
 	/**
 	 * Replace Scene Content with fxml file code from oracle.
 	 * @param fxml
diff --git a/src/main/java/seng202/group9/Controller/SceneCode.java b/src/main/java/seng202/group9/Controller/SceneCode.java
new file mode 100644
index 0000000..7262b7a
--- /dev/null
+++ b/src/main/java/seng202/group9/Controller/SceneCode.java
@@ -0,0 +1,9 @@
+package seng202.group9.Controller;
+
+/**
+ * Created by fwy13 on 16/09/16.
+ */
+public enum SceneCode {
+    INITIAL, AIRLINE_SUMMARY, AIRLINE_RAW_DATA, AIRPORT_SUMMARY, AIRPORT_RAW_DATA,
+    ROUTE_SUMMARY, ROUTE_RAW_DATA, FLIGHT_SUMMARY, FLIGHT_RAW_DATA
+}
diff --git a/src/main/java/seng202/group9/Controller/Session.java b/src/main/java/seng202/group9/Controller/Session.java
new file mode 100644
index 0000000..0476294
--- /dev/null
+++ b/src/main/java/seng202/group9/Controller/Session.java
@@ -0,0 +1,14 @@
+package seng202.group9.Controller;
+
+import java.io.Serializable;
+
+/**
+ * Created by fwy13 on 16/09/16.
+ */
+public class Session implements Serializable {
+    private SceneCode sceneDisplayed = SceneCode.INITIAL;
+
+    public void setSceneDisplayed(SceneCode sceneDisplayed) {
+        this.sceneDisplayed = sceneDisplayed;
+    }
+}