diff --git a/app/build.gradle.kts b/app/build.gradle.kts
index 2568df0..c904fdf 100644
--- a/app/build.gradle.kts
+++ b/app/build.gradle.kts
@@ -66,6 +66,8 @@ dependencies {
     implementation("org.nanohttpd:nanohttpd:2.3.1")
     implementation("com.google.code.gson:gson:2.10.1")
     implementation("com.squareup.okhttp3:okhttp-android:5.0.0-alpha.14")
+    implementation("com.journeyapps:zxing-android-embedded:4.3.0")
+    implementation("com.google.zxing:core:3.5.3")
     testImplementation("junit:junit:4.13.2")
     androidTestImplementation("androidx.test.ext:junit:1.1.5")
     androidTestImplementation("androidx.test.espresso:espresso-core:3.5.1")
diff --git a/app/src/main/AndroidManifest.xml b/app/src/main/AndroidManifest.xml
index 051a946..e983a70 100644
--- a/app/src/main/AndroidManifest.xml
+++ b/app/src/main/AndroidManifest.xml
@@ -10,7 +10,7 @@
 
     <!-- Permissions -->
 
-    <!-- Internet -->
+    <!-- Permissions: Internet -->
     <uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />
     <uses-permission android:name="android.permission.CHANGE_WIFI_STATE" />
     <uses-permission android:name="android.permission.CHANGE_NETWORK_STATE" />
@@ -26,6 +26,10 @@
         android:usesPermissionFlags="neverForLocation"
         tools:targetApi="s" />
 
+    <!-- Permissions: Scan -->
+    <uses-feature android:name="android.hardware.camera" android:required="false"/>
+    <uses-permission android:name="android.permission.CAMERA"/>
+
     <!-- Applications -->
 
     <!-- NOTE: usesCleartextTraffic is enabled because of the API system using simple HTTP -->
@@ -47,9 +51,12 @@
             android:theme="@style/Theme.Tasksvalider">
             <intent-filter>
                 <action android:name="android.intent.action.MAIN" />
-
                 <category android:name="android.intent.category.LAUNCHER" />
             </intent-filter>
+            <intent-filter>
+                <action android:name="com.google.zxing.client.android.SCAN"/>
+                <category android:name="android.intent.category.DEFAULT"/>
+            </intent-filter>
         </activity>
     </application>
 
diff --git a/app/src/main/java/com/faraphel/tasks_valider/MainActivity.kt b/app/src/main/java/com/faraphel/tasks_valider/MainActivity.kt
index b35c547..69e4231 100644
--- a/app/src/main/java/com/faraphel/tasks_valider/MainActivity.kt
+++ b/app/src/main/java/com/faraphel/tasks_valider/MainActivity.kt
@@ -6,9 +6,14 @@ import android.os.Bundle
 import androidx.activity.ComponentActivity
 import androidx.activity.compose.setContent
 import androidx.annotation.RequiresApi
+import androidx.compose.material3.Text
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.mutableStateOf
+import androidx.compose.runtime.remember
 import com.faraphel.tasks_valider.connectivity.bwf.BwfManager
 import com.faraphel.tasks_valider.database.TaskDatabase
-import com.faraphel.tasks_valider.ui.screen.communication.CommunicationScreen
+import com.faraphel.tasks_valider.ui.screen.scan.qr.ScanBarcodeScreen
+import com.journeyapps.barcodescanner.BarcodeResult
 
 
 class MainActivity : ComponentActivity() {
@@ -22,9 +27,22 @@ class MainActivity : ComponentActivity() {
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
 
+        this.setContent {
+            @Composable
+            fun example() {
+                val barcode = remember { mutableStateOf<BarcodeResult?>(null) }
+                if (barcode.value == null) ScanBarcodeScreen(this, barcode)
+                else Text("code: ${barcode.value!!.text}")
+            }
+
+            example()
+        }
+
+        /*
         this.setContent {
             CommunicationScreen(this)
         }
+        */
     }
 
     @SuppressLint("UnspecifiedRegisterReceiverFlag")
diff --git a/app/src/main/java/com/faraphel/tasks_valider/database/dao/SubjectDao.kt b/app/src/main/java/com/faraphel/tasks_valider/database/dao/SubjectDao.kt
index 8dc676a..1b0616f 100644
--- a/app/src/main/java/com/faraphel/tasks_valider/database/dao/SubjectDao.kt
+++ b/app/src/main/java/com/faraphel/tasks_valider/database/dao/SubjectDao.kt
@@ -3,7 +3,6 @@ package com.faraphel.tasks_valider.database.dao
 import androidx.room.Dao
 import androidx.room.Query
 import com.faraphel.tasks_valider.database.dao.base.BaseDao
-import com.faraphel.tasks_valider.database.entities.SessionEntity
 import com.faraphel.tasks_valider.database.entities.SubjectEntity
 import com.faraphel.tasks_valider.database.entities.TaskEntity
 
@@ -23,5 +22,5 @@ interface SubjectDao : BaseDao<SubjectEntity> {
      * @param id the id of the subject
      */
     @Query("SELECT * FROM ${TaskEntity.TABLE_NAME} WHERE subject_id = :id")
-    fun getSessions(id: Long): List<SessionEntity>
+    fun getTasks(id: Long): List<TaskEntity>
 }
diff --git a/app/src/main/java/com/faraphel/tasks_valider/ui/screen/scan/qr/screen.kt b/app/src/main/java/com/faraphel/tasks_valider/ui/screen/scan/qr/screen.kt
new file mode 100644
index 0000000..362699e
--- /dev/null
+++ b/app/src/main/java/com/faraphel/tasks_valider/ui/screen/scan/qr/screen.kt
@@ -0,0 +1,30 @@
+package com.faraphel.tasks_valider.ui.screen.scan.qr
+
+import android.app.Activity
+import androidx.compose.foundation.layout.Box
+import androidx.compose.foundation.layout.fillMaxSize
+import androidx.compose.runtime.*
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.viewinterop.AndroidView
+import com.google.zxing.BarcodeFormat
+import com.journeyapps.barcodescanner.BarcodeResult
+import com.journeyapps.barcodescanner.DecoratedBarcodeView
+import com.journeyapps.barcodescanner.DefaultDecoderFactory
+
+/**
+ * Screen to scan a Barcode / QR Code
+ */
+@Composable
+fun ScanBarcodeScreen(activity: Activity, barcode: MutableState<BarcodeResult?>) {
+    Box(modifier = Modifier.fillMaxSize()) {
+        // AndroidView is used because "DecoratedBarcodeView" only support the legacy view system
+        AndroidView(factory = {
+            DecoratedBarcodeView(activity).apply {
+                this.decoderFactory = DefaultDecoderFactory(listOf(BarcodeFormat.QR_CODE))
+                this.initializeFromIntent(activity.intent)
+                this.decodeContinuous { result -> barcode.value = result }
+                this.resume()
+            }
+        })
+    }
+}