diff --git a/AndroidManifest.xml b/AndroidManifest.xml
index b8949d1..baccd64 100644
--- a/AndroidManifest.xml
+++ b/AndroidManifest.xml
@@ -5,8 +5,8 @@
     android:versionName="1.0" >
 
     <uses-sdk
-        android:minSdkVersion="14"
-        android:targetSdkVersion="18" />
+        android:minSdkVersion="8"
+        android:targetSdkVersion="20" />
     <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"></uses-permission>
     <uses-permission android:name="android.permission.INTERNET"></uses-permission>
     <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"></uses-permission>
@@ -26,6 +26,7 @@
             android:value="@integer/google_play_services_version" />
         <activity
             android:name=".MainActivity"
+            android:screenOrientation="portrait"
             android:label="@string/app_name" >
             <intent-filter>
                 <action android:name="android.intent.action.MAIN" />
diff --git a/res/menu/main.xml b/res/menu/main.xml
index 1cf12a7..ab28f20 100644
--- a/res/menu/main.xml
+++ b/res/menu/main.xml
@@ -1,14 +1,14 @@
 <menu xmlns:android="http://schemas.android.com/apk/res/android" >
 
-    <item
+    <item android:id="@+id/action_boussole" android:title="@string/action_boussole" android:showAsAction="always"></item><item android:id="@+id/action_map" android:title="@string/action_map" android:showAsAction="always"></item><item android:id="@+id/action_settings" android:showAsAction="always" android:title="@string/action_settings" >
+        </item><item
         android:id="@+id/action_enable_gps"
         android:showAsAction="always"
         android:icon="@drawable/ic_menu_mylocation"
         android:title="@string/action_enable_gps"/>
     
-   <item
-        android:id="@+id/action_settings"
-        android:showAsAction="always"
-        android:title="@string/action_settings"/> 
+   
+        
+         
 
 </menu>
\ No newline at end of file
diff --git a/res/values/strings.xml b/res/values/strings.xml
index 25d31a5..e922ed5 100644
--- a/res/values/strings.xml
+++ b/res/values/strings.xml
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
 <resources>
 
-    <string name="app_name">Cookie - Boussole</string>
+    <string name="app_name">Cookie</string>
     <string name="action_settings">Paramètres</string>
     <string name="action_enable_gps">Localisation</string>
     <string name="drawer_open">Open drawer</string>
@@ -16,6 +16,9 @@
         <item >Distance:</item>
         <item >Latitude:</item>
         <item >Longitude:</item>
+        <item >Précision: </item>
     </string-array>
+        <string name="action_map">Carte</string>
+        <string name="action_boussole">Boussole</string>
 
 </resources>
\ No newline at end of file
diff --git a/src/fr/projetcookie/boussole/DataManager.java b/src/fr/projetcookie/boussole/DataManager.java
index 5938094..a95ed4d 100644
--- a/src/fr/projetcookie/boussole/DataManager.java
+++ b/src/fr/projetcookie/boussole/DataManager.java
@@ -37,6 +37,7 @@ public class DataManager implements SensorEventListener, LocationListener{
 	private double lat;
 	private String serverUri;
 	private double lon;
+	private GeomagneticField geoField;
 	
 	public DataManager(Context context, DirectionUpdateListener listener) {
 		mContext = context;
@@ -60,8 +61,8 @@ public void start() {
 			Toast.makeText(mContext, "Getting data from settings", Toast.LENGTH_SHORT).show();
 		}
 		mProvider.start();
-		sensorManager.registerListener(this, gsensor, SensorManager.SENSOR_DELAY_GAME);
-		sensorManager.registerListener(this, msensor, SensorManager.SENSOR_DELAY_GAME);
+		sensorManager.registerListener(this, gsensor, SensorManager.SENSOR_DELAY_NORMAL);
+		sensorManager.registerListener(this, msensor, SensorManager.SENSOR_DELAY_NORMAL);
 	}
 
 	public void stop() {
@@ -132,21 +133,21 @@ public void onSensorChanged(SensorEvent event) {
 	public void onLocationChanged(Location location) {
 		positionUpdated=true;
 		mLastLocation=location;
+
+		geoField = new GeomagneticField(
+				(float) mLastLocation.getLatitude(),
+				(float) mLastLocation.getLongitude(),
+				(float) mLastLocation.getAltitude(),
+				System.currentTimeMillis());
+		
 		updateDirection();
 	}
 	
-	private void updateDirection() {	
-		float azimuth = direction;
-		Location currentLoc = mLastLocation;
-		GeomagneticField geoField = new GeomagneticField(
-				(float) currentLoc.getLatitude(),
-				(float) currentLoc.getLongitude(),
-				(float) currentLoc.getAltitude(),
-				System.currentTimeMillis());
-		azimuth += geoField.getDeclination();
-		float bearing = currentLoc.bearingTo(mProvider.getLocation());
+	private void updateDirection() {			
+		direction += geoField.getDeclination();
+		float bearing = mLastLocation.bearingTo(mProvider.getLocation());
 		
 		
-		mListener.onDirectionUpdate(azimuth - bearing);
+		mListener.onDirectionUpdate(direction - bearing);
 	}
 }
diff --git a/src/fr/projetcookie/boussole/MainActivity.java b/src/fr/projetcookie/boussole/MainActivity.java
index 2c827bf..9851171 100644
--- a/src/fr/projetcookie/boussole/MainActivity.java
+++ b/src/fr/projetcookie/boussole/MainActivity.java
@@ -86,6 +86,7 @@ public class MainActivity extends ActionBarActivity implements
 	private String mDistanceText;
 	private String mLatitudeText;
 	private String mLongitudeText;
+	private String mPrecisionText;
 	
 	private ArrayAdapter<String> dataAdapter;
 	private ArrayList<String> mDataString = new ArrayList<String>();
@@ -116,11 +117,13 @@ protected void onCreate(Bundle savedInstanceState) {
 		mDistanceText  = mDataTitles[1] + " N/A";
 		mLatitudeText  = mDataTitles[2] + " N/A";
 		mLongitudeText = mDataTitles[3] + " N/A";
+		mPrecisionText = mDataTitles[4] + " N/A";
 
 		mDataString.add(mAltitudeText);
 		mDataString.add(mDistanceText);
 		mDataString.add(mLatitudeText);
 		mDataString.add(mLongitudeText);
+		mDataString.add(mPrecisionText);
         
         dataAdapter = new ArrayAdapter<String>(this,
                 R.layout.drawer_list_item, mDataString);
@@ -214,12 +217,17 @@ public boolean onOptionsItemSelected(MenuItem item) {
         case R.id.action_enable_gps:
         	 startActivity(new Intent(android.provider.Settings.ACTION_LOCATION_SOURCE_SETTINGS));
              return true;
+        case R.id.action_boussole:
+        	selectItem(1);
+        	return true;
+        case R.id.action_map:
+        	selectItem(2);
+        	return true;
         default:
             return super.onOptionsItemSelected(item);
         }
     }
 
-    /* The click listner for ListView in the navigation drawer */
     private class DrawerItemClickListener implements ListView.OnItemClickListener {
         @Override
         public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
@@ -493,6 +501,7 @@ public void onDirectionUpdate(float dir) {
 		double distance = baloonLoc.distanceTo(mDataManager.mLastLocation); // 7
 		double lat = baloonLoc.getLatitude(); // 8
 		double lon = baloonLoc.getLongitude(); // 9
+		double prec = baloonLoc.getAccuracy();
 		
 		if(h > 800)
 			mAltitudeText  = mDataTitles[0] + " " + Math.round(h/10)/100f + " km";
@@ -506,6 +515,12 @@ public void onDirectionUpdate(float dir) {
 			
 		mLatitudeText  = mDataTitles[2] + " " + Math.round(lat*1000)/1000f + "°";
 		mLongitudeText = mDataTitles[3] + " " + Math.round(lon*1000)/1000f + "°";
+		
+		if(prec > 800) 
+			mPrecisionText = mDataTitles[4] + " " + Math.round(prec/10)/100f + " km";
+		else
+			mPrecisionText = mDataTitles[4] + " " + Math.round(prec) + " m";
+			
 
 		dataAdapter.clear();
 		dataAdapter.add(mAltitudeText);
@@ -513,6 +528,9 @@ public void onDirectionUpdate(float dir) {
 		dataAdapter.add(mLatitudeText);
 		dataAdapter.add(mLongitudeText);
 		
+		if(prec != 0)
+			dataAdapter.add(mPrecisionText);
+		
 		dataAdapter.notifyDataSetChanged();
 		adapter.notifyDataSetChanged();