diff --git a/resources/javatuples-1.2.jar b/resources/javatuples-1.2.jar
new file mode 100644
index 0000000..8944308
Binary files /dev/null and b/resources/javatuples-1.2.jar differ
diff --git a/src/client/MainWindow.java b/src/client/MainWindow.java
new file mode 100644
index 0000000..b6020d2
--- /dev/null
+++ b/src/client/MainWindow.java
@@ -0,0 +1,22 @@
+package org.manzerbredes.client;
+
+import java.awt.EventQueue;
+import javax.swing.JFrame;
+
+public class MainWindow extends JFrame {
+	
+	
+	
+	public MainWindow(){
+		this.initUI();
+		this.setVisible(true);
+	}
+	
+	private void initUI(){
+		this.setTitle("Open KLM");
+		this.setSize(700, 500);
+        setLocationRelativeTo(null);
+        setDefaultCloseOperation(EXIT_ON_CLOSE);
+	}
+	
+}
\ No newline at end of file
diff --git a/src/device/Driver.java b/src/device/Driver.java
index d629aa7..a099d95 100644
--- a/src/device/Driver.java
+++ b/src/device/Driver.java
@@ -110,12 +110,15 @@ public class Driver{
 		// Init HIDAPI Library
 		com.codeminders.hidapi.ClassPathLibraryLoader.loadNativeHIDLibrary();
 		
+		// Try not bind the device
 		try {
 			HIDManager man=HIDManager.getInstance();
 			this.device=man.openById(0x1770, 0xff00, null);
+			if(this.device==null)
+				throw new Exception();
 		}
 		catch(Exception e){
-			throw new InstantiationException("Failed to instanciate driver.");
+			throw new InstantiationException("Failed to instanciate driver. Device not found or permission denied (try as root)");
 		}
 		
 	}
diff --git a/src/device/Keyboard.java b/src/device/Keyboard.java
index 4acf4a1..cc7d8f9 100644
--- a/src/device/Keyboard.java
+++ b/src/device/Keyboard.java
@@ -10,27 +10,20 @@ public class Keyboard{
 	 * Device driver
 	 */
 	private Driver device;
-	
-	/**
-	 * Define Keyboard color state
-	 */
-	private HashMap<Region, Color> KeyboardColor=new HashMap<>();
-	
-	/**
-	 * Define Keyboard mode state
-	 */
-	private Mode mode=Mode.NORMAL;
 
 	/**
-	 * Build a keyboard access
+	 * Keyboard State
 	 */
-	public Keyboard(){
-		try {
-			this.device=new Driver();
-		} catch (InstantiationException e) {
-			// TODO Auto-generated catch block
-			e.printStackTrace();
-		}
+	private KeyboardState state;
+	
+	/**
+	 * Build a keyboard access
+	 * 
+	 * @throws InstantiationException Throw if failed to instanciate driver
+	 */
+	public Keyboard() throws InstantiationException{
+		this.device=new Driver();
+		this.state=new KeyboardState();
 	}
 	
 	
@@ -42,10 +35,8 @@ public class Keyboard{
 	 * @param intensity Intensity wanted
 	 */
 	public void setColor(Color color, Intensity intensity){
-		// Save state
-		this.KeyboardColor.put(Region.LEFT, color);
-		this.KeyboardColor.put(Region.MIDDLE, color);
-		this.KeyboardColor.put(Region.RIGHT, color);
+		//Save state
+		this.state.setColor(color, intensity);
 		
 		// Set color
 		this.device.setColor(Region.LEFT, color, intensity);
@@ -53,7 +44,7 @@ public class Keyboard{
 		this.device.setColor(Region.RIGHT, color, intensity);
 		
 		// Apply color
-		this.device.commit(this.mode);
+		this.device.commit(this.state.getMode());
 
 	}
 	
@@ -67,13 +58,13 @@ public class Keyboard{
 	 */
 	public void setRegionColor(Region region, Color color, Intensity intensity){
 		// Save state
-		this.KeyboardColor.put(region, color);
+		this.state.setRegionColor(region, color, intensity);
 		
 		// Set color
 		this.device.setColor(region, color, intensity);
 		
 		// Apply color
-		this.device.commit(this.mode);
+		this.device.commit(this.state.getMode());
 
 	}
 	
diff --git a/src/device/KeyboardState.java b/src/device/KeyboardState.java
new file mode 100644
index 0000000..b8cbce4
--- /dev/null
+++ b/src/device/KeyboardState.java
@@ -0,0 +1,55 @@
+package org.manzerbredes.open_klm.device;
+
+import java.util.HashMap;
+
+import org.javatuples.Pair;
+import org.manzerbredes.open_klm.device.Driver.Color;
+import org.manzerbredes.open_klm.device.Driver.Intensity;
+import org.manzerbredes.open_klm.device.Driver.Mode;
+import org.manzerbredes.open_klm.device.Driver.Region;
+
+public class KeyboardState {
+	
+	/**
+	 * Define Keyboard color state
+	 */
+	private HashMap<Region, Pair<Color,Intensity>> KeyboardColor=new HashMap<>();
+	
+	/**
+	 * Define Keyboard mode state
+	 */
+	private Mode mode;
+	
+	
+	public KeyboardState() {
+		this.mode=Mode.NORMAL;
+	}
+	
+	public void setColor(Color color, Intensity intensity){
+		this.KeyboardColor.put(Region.LEFT, new Pair<Driver.Color, Driver.Intensity>(color, intensity));
+		this.KeyboardColor.put(Region.MIDDLE, new Pair<Driver.Color, Driver.Intensity>(color, intensity));
+		this.KeyboardColor.put(Region.RIGHT, new Pair<Driver.Color, Driver.Intensity>(color, intensity));
+	}
+
+	public void setRegionColor(Region region, Color color, Intensity intensity){
+		this.KeyboardColor.put(region, new Pair<Driver.Color, Driver.Intensity>(color, intensity));
+	}
+	
+	
+	/**
+	 * @return the mode
+	 */
+	public Mode getMode() {
+		return mode;
+	}
+
+	/**
+	 * @param mode the mode to set
+	 */
+	public void setMode(Mode mode) {
+		this.mode = mode;
+	}
+	
+	
+
+}