diff --git a/app/src/main/java/co/zzyzx/sensorlogger/EndlessService.kt b/app/src/main/java/co/zzyzx/sensorlogger/EndlessService.kt
index a8b0865..3fb1284 100644
--- a/app/src/main/java/co/zzyzx/sensorlogger/EndlessService.kt
+++ b/app/src/main/java/co/zzyzx/sensorlogger/EndlessService.kt
@@ -1,5 +1,6 @@
 package co.zzyzx.sensorlogger
 
+//import com.github.kittinunf.fuel.core.extensions.jsonBody
 import android.app.*
 import android.content.Context
 import android.content.Intent
@@ -17,41 +18,25 @@ import android.os.Bundle
 import android.os.IBinder
 import android.os.PowerManager
 import android.provider.Settings
-import android.support.v4.app.ActivityCompat
-import android.support.v4.app.NotificationCompat
 import android.widget.Toast
+import com.github.kittinunf.fuel.Fuel
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.GlobalScope
+import kotlinx.coroutines.delay
+import kotlinx.coroutines.launch
 import java.text.SimpleDateFormat
 import java.util.*
-import com.github.kittinunf.fuel.Fuel
-//import com.github.kittinunf.fuel.core.extensions.jsonBody
-import kotlinx.coroutines.*
-import java.util.jar.Manifest
-
 
-const val PERMISSION_LOCATION = 0
 
+fun Double.format(digits: Int) = java.lang.String.format("%.${digits}f", this)
 
-class EndlessService : Service(), SensorEventListener, LocationListener,
-    ActivityCompat.OnRequestPermissionsResultCallback {
-
-    override fun onRequestPermissionsResult(
-        requestCode: Int,
-        permissions: Array<out String>,
-        grantResult: IntArray
-    ) {
-        when (requestCode) {
-            PERMISSION_LOCATION -> {
-                Toast.makeText(
-                    applicationContext,
-                    "${if (grantResult[0] == PackageManager.PERMISSION_GRANTED) "Good" else "Bad"} Permission for locaion",
-                    Toast.LENGTH_LONG
-                )
-            }
-        }
-    }
+class EndlessService : Service(), SensorEventListener, LocationListener {
 
     override fun onLocationChanged(result: Location) {
-        val txt = "coords: ${result.longitude}, ${result.latitude} - ${result.time}"
+        val txt =
+            "coords: ${result.longitude.format(4)}, ${result.latitude.format(4)} - ${result.time.toDouble().format(
+                0
+            )}"
         log(txt)
 
         val notification = createNotification(txt)
@@ -102,7 +87,6 @@ class EndlessService : Service(), SensorEventListener, LocationListener,
             )
         }
 
-
         mSensorManager.registerListener(this, mAccelerometer, SensorManager.SENSOR_DELAY_NORMAL)
 
         // by returning this we make sure the service is restarted if the system kills the service
@@ -123,25 +107,24 @@ class EndlessService : Service(), SensorEventListener, LocationListener,
             mLocationManager = getSystemService(Context.LOCATION_SERVICE) as LocationManager
             mLocationManager.requestLocationUpdates(
                 LocationManager.PASSIVE_PROVIDER,
-                0L,
-                0.toFloat(),
+                2000, // 2-sec
+                2.toFloat(),  // 2-meter
                 this
             )
-        } else {
-//            requestLocationPermission()
-            log("No location permission!")
+            mLocationManager.requestLocationUpdates(
+                LocationManager.GPS_PROVIDER,
+                2000, // 2-sec
+                2.toFloat(),  // 2-meter
+                this
+            )
+            log("ok permission to get location updates")
         }
-
-//        val location = mLocationManager.addNmeaListener { s: String?, l: Long ->
-//            log("${s} = ${l.toString()}")
-//        }
-
-
     }
 
     override fun onDestroy() {
         super.onDestroy()
         mSensorManager.unregisterListener(this)
+        mLocationManager.removeUpdates(this)
         log("The service has been destroyed".toUpperCase())
         Toast.makeText(this, "Service destroyed", Toast.LENGTH_SHORT).show()
     }
diff --git a/app/src/main/java/co/zzyzx/sensorlogger/MainActivity.kt b/app/src/main/java/co/zzyzx/sensorlogger/MainActivity.kt
index ccfaaa2..ef09f20 100644
--- a/app/src/main/java/co/zzyzx/sensorlogger/MainActivity.kt
+++ b/app/src/main/java/co/zzyzx/sensorlogger/MainActivity.kt
@@ -1,33 +1,98 @@
 package co.zzyzx.sensorlogger
 
+import android.Manifest
+import android.content.Context
 import android.content.Intent
+import android.content.pm.PackageManager
+import android.graphics.Color
+import android.location.LocationManager
 import android.os.Build
-import android.support.v7.app.AppCompatActivity
 import android.os.Bundle
-import android.util.Log
+import android.support.v4.app.ActivityCompat
+import android.support.v4.content.ContextCompat
+import android.support.v7.app.AppCompatActivity
+import android.view.View
 import android.widget.Button
+import android.widget.Toast
+import kotlinx.android.synthetic.main.activity_main.*
+
 
-class MainActivity : AppCompatActivity() {
+const val PERMISSION_LOCATION = 0
+
+class MainActivity : AppCompatActivity(),
+    ActivityCompat.OnRequestPermissionsResultCallback {
 
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
         setContentView(R.layout.activity_main)
 
+        requestForNecessaryPermissions()
         title = getString(R.string.app_name)
 
-        findViewById<Button>(R.id.btnStartService).let {
+        start_service_btn.let {
             it.setOnClickListener {
                 log("START THE FOREGROUND SERVICE ON DEMAND")
                 actionOnService(Actions.START)
             }
         }
 
-        findViewById<Button>(R.id.btnStopService).let {
+        stop_service_btn.let {
             it.setOnClickListener {
                 log("STOP THE FOREGROUND SERVICE ON DEMAND")
                 actionOnService(Actions.STOP)
             }
         }
+
+        ask_location_permission_button.let{
+            it.setOnClickListener { requestForNecessaryPermissions() }
+        }
+
+
+    }
+
+    private fun UIStatusUpdates(hasLocPerm : Boolean = true) {
+
+        val mLocationManager = getSystemService(Context.LOCATION_SERVICE) as LocationManager
+        log("isLocationEnabled? ${mLocationManager.isLocationEnabled} - ${mLocationManager.allProviders.toString()}")
+        if (hasLocPerm && mLocationManager.isLocationEnabled) {
+            location_status_textview.text =  "OK"
+            location_status_textview.setBackgroundColor(ContextCompat.getColor(applicationContext, R.color.green))
+        } else {
+            location_status_textview.text =  "OFF"
+            location_status_textview.setBackgroundColor(ContextCompat.getColor(applicationContext, R.color.red))
+        }
+    }
+
+    private fun requestForNecessaryPermissions() {
+        // Here, thisActivity is the current activity
+        if (ContextCompat.checkSelfPermission(
+                this,
+                Manifest.permission.ACCESS_FINE_LOCATION
+            )
+            != PackageManager.PERMISSION_GRANTED
+        ) {
+            ask_location_permission_button.visibility = View.INVISIBLE
+            // Permission is not granted
+            // Should we show an explanation?
+            if (ActivityCompat.shouldShowRequestPermissionRationale(
+                    this,
+                    Manifest.permission.ACCESS_FINE_LOCATION
+                )
+            ) {
+                val perms = arrayOf(Manifest.permission.ACCESS_FINE_LOCATION)
+                ActivityCompat.requestPermissions(
+                    this, perms,
+                    PERMISSION_LOCATION
+                )
+            }
+            UIStatusUpdates(false)
+        } else {
+            // Permission has already been granted
+            log("Permission has already been granted")
+            ask_location_permission_button.visibility = View.INVISIBLE
+            UIStatusUpdates(true)
+        }
+
     }
 
     private fun actionOnService(action: Actions) {
@@ -43,4 +108,22 @@ class MainActivity : AppCompatActivity() {
             startService(it)
         }
     }
+
+    override fun onRequestPermissionsResult(
+        requestCode: Int,
+        permissions: Array<out String>,
+        grantResult: IntArray
+    ) {
+        when (requestCode) {
+            PERMISSION_LOCATION -> {
+                val hasPerm = grantResult[0] == PackageManager.PERMISSION_GRANTED
+                Toast.makeText(
+                    applicationContext,
+                    "${if (hasPerm) "Good" else "Bad"} Permission for location",
+                    Toast.LENGTH_LONG
+                )
+                UIStatusUpdates(hasPerm)
+            }
+        }
+    }
 }
diff --git a/app/src/main/res/layout/activity_main.xml b/app/src/main/res/layout/activity_main.xml
index bb573aa..58df2d7 100644
--- a/app/src/main/res/layout/activity_main.xml
+++ b/app/src/main/res/layout/activity_main.xml
@@ -1,29 +1,66 @@
 <?xml version="1.0" encoding="utf-8"?>
-<android.support.constraint.ConstraintLayout
-        xmlns:android="http://schemas.android.com/apk/res/android"
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
         xmlns:tools="http://schemas.android.com/tools"
         android:layout_width="match_parent"
         android:layout_height="match_parent"
+        android:orientation="vertical"
         tools:context=".MainActivity">
 
+
+    <TextView
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:text="Status" />
+
     <LinearLayout
             android:layout_width="match_parent"
             android:layout_height="wrap_content"
-            android:orientation="vertical">
+            android:orientation="horizontal">
 
+        <TextView
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:layout_weight="1"
+                android:background="@android:color/background_light"
+                android:text="GPS" />
+
+        <TextView
+                android:id="@+id/location_status_textview"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:layout_weight="3"
+                android:textAlignment="center"
+                android:background="@android:color/background_light"
+                android:text="" />
 
         <Button
-                android:id="@+id/btnStartService"
-                android:layout_width="match_parent"
+                android:id="@+id/ask_location_permission_button"
+                android:layout_width="wrap_content"
                 android:layout_height="wrap_content"
-                android:text="Start Foreground Service" android:paddingTop="20dp" android:layout_marginTop="20dp"/>
+                android:layout_weight="3"
+                android:padding="0dp"
+                android:text="Permission Request" />
+
+    </LinearLayout>
+
+    <LinearLayout
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:orientation="horizontal">
 
         <Button
-                android:id="@+id/btnStopService"
-                android:layout_width="match_parent"
+                android:id="@+id/start_service_btn"
+                android:layout_width="wrap_content"
                 android:layout_height="wrap_content"
-                android:text="Stop Foreground Service"/>
+                android:layout_weight="1"
+                android:text="Start Foreground Service" />
 
+        <Button
+                android:id="@+id/stop_service_btn"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:layout_weight="1"
+                android:text="Stop Foreground Service" />
     </LinearLayout>
 
-</android.support.constraint.ConstraintLayout>
\ No newline at end of file
+</LinearLayout>
\ No newline at end of file
diff --git a/app/src/main/res/values/colors.xml b/app/src/main/res/values/colors.xml
index 69b2233..29f2a74 100644
--- a/app/src/main/res/values/colors.xml
+++ b/app/src/main/res/values/colors.xml
@@ -3,4 +3,6 @@
     <color name="colorPrimary">#008577</color>
     <color name="colorPrimaryDark">#00574B</color>
     <color name="colorAccent">#D81B60</color>
+    <color name="green">#22DD22</color>
+    <color name="red">#DD2222</color>
 </resources>