diff --git a/app/build.gradle.kts b/app/build.gradle.kts
index ed118fc..5db132f 100644
--- a/app/build.gradle.kts
+++ b/app/build.gradle.kts
@@ -67,6 +67,7 @@ dependencies {
     implementation(libs.ktor.client.core)
     implementation(libs.ktor.client.okhttp)
     implementation(libs.ktor.client.logging)
+    implementation(libs.ktor.client.json)
     implementation(libs.logback.classic)
 
     implementation(libs.splitties.base)
diff --git a/app/src/main/AndroidManifest.xml b/app/src/main/AndroidManifest.xml
index e2b8fbe..1e1041a 100644
--- a/app/src/main/AndroidManifest.xml
+++ b/app/src/main/AndroidManifest.xml
@@ -11,6 +11,9 @@
     <uses-permission android:name="android.permission.INTERNET" />
     <uses-permission android:name="android.permission.ACCESS_BACKGROUND_LOCATION" />
     <uses-permission android:name="android.permission.FOREGROUND_SERVICE" />
+    <uses-permission android:name="android.permission.WAKE_LOCK" />
+    <uses-permission android:name="android.permission.POST_NOTIFICATIONS" />
+    <uses-permission android:name="android.permission.FOREGROUND_SERVICE_LOCATION" />
 
     <application
         android:allowBackup="true"
@@ -34,6 +37,12 @@
                 <category android:name="android.intent.category.LAUNCHER" />
             </intent-filter>
         </activity>
+
+        <service
+            android:name=".LocationForegroundService"
+            android:foregroundServiceType="location"
+            android:enabled="true"
+            android:exported="false" />
     </application>
 
 </manifest>
\ No newline at end of file
diff --git a/app/src/main/java/ru/risdeveau/geotracker/API.kt b/app/src/main/java/ru/risdeveau/geotracker/API.kt
index dc63156..daee50c 100644
--- a/app/src/main/java/ru/risdeveau/geotracker/API.kt
+++ b/app/src/main/java/ru/risdeveau/geotracker/API.kt
@@ -9,7 +9,12 @@ import io.ktor.client.*
 import io.ktor.client.engine.okhttp.OkHttp
 import io.ktor.client.plugins.logging.*
 import io.ktor.client.request.get
+import io.ktor.client.request.post
+import io.ktor.client.request.setBody
+import io.ktor.http.ContentType
 import io.ktor.http.HttpStatusCode
+import io.ktor.http.contentType
+import org.json.JSONObject
 
 val client = HttpClient(OkHttp) {
     install(Logging) {
@@ -38,6 +43,22 @@ suspend fun health(baseurl: String): Boolean {
 
 /**
  * Send data to a server
+ * @return true if sent successfully
  */
-fun sendGeo(baseurl: String, data: GeoData) {
+suspend fun sendGeo(baseurl: String = SettingsPreferences.url, data: GeoData): Boolean {
+    try {
+        val json = JSONObject()
+        json.put("ln", data.ln)
+        json.put("lt", data.lt)
+        json.put("nick", data.nick)
+
+        client.post("$baseurl/map") {
+            contentType(ContentType.Application.Json)
+            setBody(json.toString(2))
+        }
+        return true
+    } catch (e: Exception) {
+        println("Error: ${e.message}")
+        return false
+    }
 }
\ No newline at end of file
diff --git a/app/src/main/java/ru/risdeveau/geotracker/LocationForegroundService.kt b/app/src/main/java/ru/risdeveau/geotracker/LocationForegroundService.kt
new file mode 100644
index 0000000..4c904c8
--- /dev/null
+++ b/app/src/main/java/ru/risdeveau/geotracker/LocationForegroundService.kt
@@ -0,0 +1,76 @@
+package ru.risdeveau.geotracker
+
+import android.app.Notification
+import android.app.NotificationChannel
+import android.app.NotificationManager
+import android.app.Service
+import android.content.Intent
+import android.os.Build
+import android.os.IBinder
+import android.util.Log
+import androidx.core.app.NotificationCompat
+import kotlinx.coroutines.CoroutineScope
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.Job
+import kotlinx.coroutines.launch
+
+
+class LocationForegroundService : Service() {
+
+    private lateinit var locationTracker: LocationTracker
+    private val serviceScope = CoroutineScope(Dispatchers.Main + Job())
+
+    override fun onCreate() {
+        Log.d("Service", "onCreate")
+        super.onCreate()
+        locationTracker = LocationTracker(this) { location ->
+            serviceScope.launch {
+                sendGeo(
+                    data = GeoData(
+                        lt = location.latitude,
+                        ln = location.longitude,
+                        nick = SettingsPreferences.username
+                    )
+                )
+            }
+        }
+    }
+
+    override fun onStartCommand(intent: Intent?, flags: Int, startId: Int): Int {
+        Log.d("Service", "onStartCommand")
+        createNotificationChannel()
+        val notification = createNotification()
+        startForeground(1, notification)
+
+        locationTracker.startTracking(5000)
+        return START_STICKY
+    }
+
+    override fun onDestroy() {
+        locationTracker.stopTracking()
+        super.onDestroy()
+    }
+
+    private fun createNotificationChannel() {
+        Log.d("Service", "createNotificationChannel")
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
+            val channel = NotificationChannel(
+                "location_channel",
+                "Location Tracking",
+                NotificationManager.IMPORTANCE_LOW
+            )
+            val manager = getSystemService(NOTIFICATION_SERVICE) as NotificationManager
+            manager.createNotificationChannel(channel)
+        }
+    }
+
+    private fun createNotification(): Notification {
+        return NotificationCompat.Builder(this, "location_channel")
+            .setContentTitle("Отслеживание местоположения")
+            .setContentText("Обновление каждые 5 секунд")
+            .setSmallIcon(R.drawable.ic_launcher_foreground)
+            .build()
+    }
+
+    override fun onBind(intent: Intent?): IBinder? = null
+}
\ No newline at end of file
diff --git a/app/src/main/java/ru/risdeveau/geotracker/LocationTracker.kt b/app/src/main/java/ru/risdeveau/geotracker/LocationTracker.kt
new file mode 100644
index 0000000..cdb8c50
--- /dev/null
+++ b/app/src/main/java/ru/risdeveau/geotracker/LocationTracker.kt
@@ -0,0 +1,62 @@
+package ru.risdeveau.geotracker
+
+import android.annotation.SuppressLint
+import android.content.Context
+import android.content.Context.LOCATION_SERVICE
+import android.content.pm.PackageManager
+import android.location.Location
+import android.location.LocationListener
+import android.location.LocationManager
+import android.os.Bundle
+import android.os.Looper
+import android.util.Log
+import androidx.core.content.ContextCompat
+
+class LocationTracker(
+    private val context: Context,
+    private val onLocationUpdate: (Location) -> Unit
+) : LocationListener {
+
+    private val locationManager =
+        context.getSystemService(LOCATION_SERVICE) as LocationManager
+
+    @SuppressLint("MissingPermission")
+    fun startTracking(interval: Long = 5000, minDistance: Float = 0f) {
+        Log.d("Tracker", "perms: ${hasPermissions()}")
+        if (!hasPermissions()) return
+
+        locationManager.requestLocationUpdates(
+            LocationManager.GPS_PROVIDER,
+            interval,
+            minDistance,
+            this,
+            Looper.getMainLooper()
+        )
+
+        locationManager.getLastKnownLocation(LocationManager.GPS_PROVIDER)?.let {
+            onLocationUpdate(it)
+        }
+    }
+
+    fun stopTracking() {
+        locationManager.removeUpdates(this)
+    }
+
+    override fun onLocationChanged(location: Location) {
+        onLocationUpdate(location)
+    }
+
+    override fun onStatusChanged(provider: String?, status: Int, extras: Bundle?) {}
+    override fun onProviderEnabled(provider: String) {}
+    override fun onProviderDisabled(provider: String) {}
+
+    private fun hasPermissions(): Boolean {
+        return ContextCompat.checkSelfPermission(
+            context,
+            android.Manifest.permission.ACCESS_FINE_LOCATION
+        ) == PackageManager.PERMISSION_GRANTED || ContextCompat.checkSelfPermission(
+            context,
+            android.Manifest.permission.ACCESS_COARSE_LOCATION
+        ) == PackageManager.PERMISSION_GRANTED
+    }
+}
\ No newline at end of file
diff --git a/app/src/main/java/ru/risdeveau/geotracker/MainActivity.kt b/app/src/main/java/ru/risdeveau/geotracker/MainActivity.kt
index 38f5fbb..d3bfb31 100644
--- a/app/src/main/java/ru/risdeveau/geotracker/MainActivity.kt
+++ b/app/src/main/java/ru/risdeveau/geotracker/MainActivity.kt
@@ -7,8 +7,11 @@ package ru.risdeveau.geotracker
 
 import android.Manifest
 import android.content.Context
+import android.content.Intent
 import android.content.pm.PackageManager
+import android.os.Build
 import android.os.Bundle
+import android.util.Log
 import androidx.activity.ComponentActivity
 import androidx.activity.compose.rememberLauncherForActivityResult
 import androidx.activity.compose.setContent
@@ -46,8 +49,10 @@ import splitties.init.appCtx
 import splitties.resources.appStr
 
 class MainActivity : ComponentActivity() {
+
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
+
         enableEdgeToEdge()
         setContent {
             GeoTrackerTheme {
@@ -60,6 +65,12 @@ class MainActivity : ComponentActivity() {
 
                         when (screen) {
                             Screen.Main -> {
+                                LaunchedEffect(Unit) {
+                                    Log.d("Thread", "Starting...")
+                                    startLocationService()
+                                    Log.d("Thread", "Started")
+                                }
+
                                 Text("Hello world")
                             }
 
@@ -101,8 +112,8 @@ sealed class Screen {
 @OptIn(ExperimentalSplittiesApi::class)
 @Composable
 fun Settings(modifier: Modifier = Modifier, onConfirm: () -> Unit) {
-    var username by remember { mutableStateOf("") }
-    var url by remember { mutableStateOf("") }
+    var username by remember { mutableStateOf(SettingsPreferences.username) }
+    var url by remember { mutableStateOf(SettingsPreferences.url) }
     var urlIsValid by remember { mutableStateOf(false) }
     var loading by remember { mutableStateOf(false) }
 
@@ -196,4 +207,14 @@ fun hasLocationPermissions(context: Context): Boolean {
         context,
         Manifest.permission.ACCESS_COARSE_LOCATION
     ) == PackageManager.PERMISSION_GRANTED
+}
+
+fun startLocationService() {
+    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
+        appCtx.startForegroundService(Intent(appCtx, LocationForegroundService::class.java))
+        Log.d("startLocationService", "startForegroundService")
+    } else {
+        appCtx.startService(Intent(appCtx, LocationForegroundService::class.java))
+        Log.d("startLocationService", "startService")
+    }
 }
\ No newline at end of file
diff --git a/gradle/libs.versions.toml b/gradle/libs.versions.toml
index 87d0963..b64a90c 100644
--- a/gradle/libs.versions.toml
+++ b/gradle/libs.versions.toml
@@ -31,6 +31,7 @@ androidx-ui-test-manifest = { group = "androidx.compose.ui", name = "ui-test-man
 androidx-ui-test-junit4 = { group = "androidx.compose.ui", name = "ui-test-junit4" }
 androidx-material3 = { group = "androidx.compose.material3", name = "material3" }
 ktor-client-core = { module = "io.ktor:ktor-client-core", version.ref = "ktor" }
+ktor-client-json = { module = "io.ktor:ktor-client-json", version.ref = "ktor" }
 ktor-client-logging = { module = "io.ktor:ktor-client-logging", version.ref = "ktor" }
 ktor-client-okhttp = { module = "io.ktor:ktor-client-okhttp", version.ref = "ktor" }
 logback-classic = { module = "ch.qos.logback:logback-classic", version.ref = "logbackClassic" }