diff --git a/app/src/main/AndroidManifest.xml b/app/src/main/AndroidManifest.xml
index 61da587..fc2cb02 100644
--- a/app/src/main/AndroidManifest.xml
+++ b/app/src/main/AndroidManifest.xml
@@ -18,13 +18,19 @@
         tools:targetApi="31">
         <activity
             android:name=".PaltoActivity"
-            android:exported="true" >
+            android:exported="true"
+            android:launchMode="singleTop">
 
             <intent-filter>
                 <action android:name="android.intent.action.MAIN" />
                 <category android:name="android.intent.category.LAUNCHER" />
             </intent-filter>
 
+            <intent-filter>
+                <action android:name="android.nfc.action.TAG_DISCOVERED"/>
+                <category android:name="android.intent.category.DEFAULT" />
+            </intent-filter>
+
         </activity>
     </application>
 
diff --git a/app/src/main/java/com/example/palto/PaltoActivity.kt b/app/src/main/java/com/example/palto/PaltoActivity.kt
index 1df8c28..8a70afa 100644
--- a/app/src/main/java/com/example/palto/PaltoActivity.kt
+++ b/app/src/main/java/com/example/palto/PaltoActivity.kt
@@ -5,42 +5,46 @@ import android.nfc.Tag
 import android.os.Bundle
 import android.util.Log
 import androidx.appcompat.app.AppCompatActivity
+import androidx.activity.viewModels
 
 
 class PaltoActivity : AppCompatActivity() {
+
     private var nfcAdapter: NfcAdapter? = null
 
+    private val paltoViewModel: PaltoViewModel by viewModels()
+
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
-        setContentView(R.layout.activity_palto)
 
         // get the NFC Adapter
-        this.nfcAdapter = NfcAdapter.getDefaultAdapter(this)
+        nfcAdapter = NfcAdapter.getDefaultAdapter(this)
 
         // check if NFC is supported
-        if (this.nfcAdapter == null) {
+        if (nfcAdapter == null) {
             Log.e("NFC", "NFC is not supported")
             return
         }
 
         // check if NFC is disabled
-        if (!(this.nfcAdapter!!.isEnabled)) {
+        if (nfcAdapter?.isEnabled == false) {
             Log.w("NFC", "NFC is not enabled")
         }
 
-        // TEST
-    /*
+        setContentView(R.layout.activity_palto)
+        /*
         val url = URL("https://www.faraphel.fr/palto/api/auth/token/")
         val connection = url.openConnection()
-        val auth_data = Json.decodeFromString(connection.content)*/
+        val auth_data = Json.decodeFromString(connection.content)
+        */
     }
 
     override fun onResume() {
         super.onResume()
 
-        nfcAdapter!!.enableReaderMode(
+        nfcAdapter?.enableReaderMode(
             this,
-            this::processTag,
+            paltoViewModel.tagLiveData::postValue,
             NfcAdapter.FLAG_READER_NFC_A or NfcAdapter.FLAG_READER_SKIP_NDEF_CHECK,
             null
         )
@@ -50,11 +54,11 @@ class PaltoActivity : AppCompatActivity() {
         super.onPause()
 
         // disable the NFC discovery
-        this.nfcAdapter!!.disableReaderMode(this)
+        nfcAdapter?.disableReaderMode(this)
     }
 
     @OptIn(ExperimentalStdlibApi::class)
     fun processTag(tag: Tag) {
-        Log.d("NFC", "Tag ID : ${tag.id.toHexString()}")
+        Log.d("NFC", "Tag ID : " + tag.id.toHexString())
     }
 }
diff --git a/app/src/main/java/com/example/palto/PaltoViewModel.kt b/app/src/main/java/com/example/palto/PaltoViewModel.kt
new file mode 100644
index 0000000..9d69dc4
--- /dev/null
+++ b/app/src/main/java/com/example/palto/PaltoViewModel.kt
@@ -0,0 +1,9 @@
+package com.example.palto
+
+import android.nfc.Tag
+import androidx.lifecycle.MutableLiveData
+import androidx.lifecycle.ViewModel
+
+class PaltoViewModel: ViewModel() {
+    val tagLiveData = MutableLiveData<Tag>()
+}
\ No newline at end of file
diff --git a/app/src/main/java/com/example/palto/model/Card.kt b/app/src/main/java/com/example/palto/model/Card.kt
index fade8d9..8c55422 100644
--- a/app/src/main/java/com/example/palto/model/Card.kt
+++ b/app/src/main/java/com/example/palto/model/Card.kt
@@ -2,5 +2,22 @@ package com.example.palto.model
 import java.io.Serializable
 
 data class Card(
-    val id: String
-) : Serializable
\ No newline at end of file
+    val id: String,
+    val uid: ByteArray,
+    val department: String,
+    val owner: String
+) {
+    override fun equals(other: Any?): Boolean {
+        if (this === other) return true
+        if (javaClass != other?.javaClass) return false
+
+        other as Card
+
+        return uid.contentEquals(other.uid)
+    }
+
+    override fun hashCode(): Int {
+        return uid.contentHashCode()
+    }
+
+}
\ No newline at end of file
diff --git a/app/src/main/java/com/example/palto/ui/attendanceList/AttendanceListAdapter.kt b/app/src/main/java/com/example/palto/ui/attendanceList/AttendanceListAdapter.kt
index 565422c..a7788b1 100644
--- a/app/src/main/java/com/example/palto/ui/attendanceList/AttendanceListAdapter.kt
+++ b/app/src/main/java/com/example/palto/ui/attendanceList/AttendanceListAdapter.kt
@@ -1,14 +1,13 @@
 package com.example.palto.ui.attendanceList
 
-import androidx.recyclerview.widget.RecyclerView
 import android.view.LayoutInflater
 import android.view.ViewGroup
 import android.widget.TextView
 import androidx.recyclerview.widget.DiffUtil
 import androidx.recyclerview.widget.ListAdapter
-import com.example.palto.model.Card
-
+import androidx.recyclerview.widget.RecyclerView
 import com.example.palto.databinding.FragmentAttendanceItemBinding
+import com.example.palto.model.Card
 
 /**
  *
@@ -30,9 +29,10 @@ class AttendanceListAdapter :
         )
     }
 
+    @OptIn(ExperimentalStdlibApi::class)
     override fun onBindViewHolder(holder: ViewHolder, position: Int) {
         val item = getItem(position)
-        holder.cardId.text = item.id
+        holder.cardId.text = item.uid.toHexString()
         //holder.contentView.text = item.content
     }
 
diff --git a/app/src/main/java/com/example/palto/ui/attendanceList/AttendanceListFragment.kt b/app/src/main/java/com/example/palto/ui/attendanceList/AttendanceListFragment.kt
index 598ef9e..68773ab 100644
--- a/app/src/main/java/com/example/palto/ui/attendanceList/AttendanceListFragment.kt
+++ b/app/src/main/java/com/example/palto/ui/attendanceList/AttendanceListFragment.kt
@@ -1,13 +1,17 @@
 package com.example.palto.ui.attendanceList
 
+import android.nfc.NfcAdapter
+import android.nfc.Tag
 import android.os.Bundle
-import androidx.fragment.app.Fragment
-import androidx.recyclerview.widget.LinearLayoutManager
-import androidx.recyclerview.widget.RecyclerView
+import android.util.Log
 import android.view.LayoutInflater
 import android.view.View
 import android.view.ViewGroup
+import androidx.fragment.app.Fragment
+import androidx.fragment.app.activityViewModels
+import androidx.lifecycle.Observer
 import androidx.navigation.navGraphViewModels
+import com.example.palto.PaltoViewModel
 import com.example.palto.R
 import com.example.palto.databinding.FragmentAttendanceListBinding
 
@@ -17,22 +21,49 @@ import com.example.palto.databinding.FragmentAttendanceListBinding
 class AttendanceListFragment : Fragment() {
 
     private val attendanceListViewModel: AttendanceListViewModel by
-        navGraphViewModels(R.id.nav_graph)
+        navGraphViewModels(R.id.nav_graph) { AttendanceListViewModel.Factory }
 
+    private val paltoViewModel: PaltoViewModel by
+        activityViewModels()
+
+    private var _binding: FragmentAttendanceListBinding? = null
+    // This property is only valid between onCreateView and onDestroyView
+    private val binding get() = _binding!!
+
+    /**
+     * Only inflate the view.
+     */
     override fun onCreateView(
         inflater: LayoutInflater,
         container: ViewGroup?,
         savedInstanceState: Bundle?
     ): View? {
-        val binding = FragmentAttendanceListBinding.inflate(inflater, container, false)
-
-        val adapter = AttendanceListAdapter()
-        binding.list.adapter = adapter
-
-        attendanceListViewModel.cardsLiveData.observe(viewLifecycleOwner) {
-            it -> adapter.submitList(it)
-        }
 
+        _binding = FragmentAttendanceListBinding.inflate(inflater, container, false)
         return binding.root
     }
+
+    /**
+     * Logic on the returned view of onCreateView.
+     */
+    override fun onViewCreated(
+        view: View,
+        savedInstanceState: Bundle?
+    ) {
+        super.onViewCreated(view, savedInstanceState)
+
+        // Set the adapter of the view for managing automatically the list of items on the screen.
+        val adapter = AttendanceListAdapter()
+        binding.list.adapter = adapter
+        attendanceListViewModel.cardsLiveData.observe(viewLifecycleOwner) {
+            Log.d("NFC", "A card has been had to the list")
+            adapter.submitList(it)
+        }
+
+        // Set the listener for a new NFC tag.
+        paltoViewModel.tagLiveData.observe(viewLifecycleOwner) {
+            Log.d("NFC", "tag observer has been notified")
+            attendanceListViewModel.insertCard(it)
+        }
+    }
 }
\ No newline at end of file
diff --git a/app/src/main/java/com/example/palto/ui/attendanceList/AttendanceListViewModel.kt b/app/src/main/java/com/example/palto/ui/attendanceList/AttendanceListViewModel.kt
index 5e366d2..a4efa38 100644
--- a/app/src/main/java/com/example/palto/ui/attendanceList/AttendanceListViewModel.kt
+++ b/app/src/main/java/com/example/palto/ui/attendanceList/AttendanceListViewModel.kt
@@ -1,5 +1,7 @@
 package com.example.palto.ui.attendanceList
 
+import android.nfc.Tag
+import android.util.Log
 import androidx.lifecycle.LiveData
 import androidx.lifecycle.MutableLiveData
 import androidx.lifecycle.ViewModel
@@ -7,32 +9,41 @@ import androidx.lifecycle.ViewModelProvider
 import com.example.palto.data.network.ServerDataSource
 import com.example.palto.data.repository.AttendanceRepository
 import com.example.palto.model.Card
-import kotlin.random.Random
 
+/**
+ * ViewModel of a session which has a list of attendances.
+ */
 class AttendanceListViewModel(
     private val attendanceRepository: AttendanceRepository
 ) : ViewModel() {
 
-    private val cardsList: MutableList<Card> = mutableListOf()
-    val cardsLiveData: LiveData<List<Card>> = MutableLiveData(cardsList)
+    val cardsLiveData: MutableLiveData<List<Card>> = MutableLiveData(emptyList())
 
-    fun insertCard(cardId: String) {
-        val card = Card(cardId)
-        cardsList.add(card)
+    fun insertCard(tag: Tag) {
+        val card = Card(
+            "0",
+            tag.id,
+            "tmp",
+            "tmp"
+        )
+        cardsLiveData.value = (cardsLiveData.value ?: emptyList()) + card
+        Log.d("NFC", "view model: A card has been had to the list")
+    }
+
+    /**
+     * ViewModel Factory.
+     */
+    companion object {
+
+        val Factory: ViewModelProvider.Factory = object : ViewModelProvider.Factory {
+            @Suppress("UNCHECKED_CAST")
+            override fun <T : ViewModel> create(
+                modelClass: Class<T>
+            ): T {
+                return AttendanceListViewModel(
+                    AttendanceRepository(ServerDataSource())
+                ) as T
+            }
+        }
     }
 }
-
-class AttendanceListViewModelFactory : ViewModelProvider.Factory {
-
-    //@Suppress("UNCHECKED_CAST")
-    override fun <T : ViewModel> create(modelClass: Class<T>): T {
-        if (modelClass.isAssignableFrom(AttendanceListViewModel::class.java)) {
-            return AttendanceListViewModel(
-                attendanceRepository = AttendanceRepository(
-                    dataSource = ServerDataSource()
-                )
-            ) as T
-        }
-        throw IllegalArgumentException("Unknown ViewModel class")
-    }
-}
\ No newline at end of file
diff --git a/app/src/main/java/com/example/palto/ui/login/LoginFragment.kt b/app/src/main/java/com/example/palto/ui/login/LoginFragment.kt
index 93b53e6..acf12be 100644
--- a/app/src/main/java/com/example/palto/ui/login/LoginFragment.kt
+++ b/app/src/main/java/com/example/palto/ui/login/LoginFragment.kt
@@ -24,8 +24,7 @@ class LoginFragment : Fragment() {
 
     private var _binding: FragmentLoginBinding? = null
 
-    // This property is only valid between onCreateView and
-    // onDestroyView.
+    // This property is only valid between onCreateView and onDestroyView.
     private val binding get() = _binding!!
 
     override fun onCreateView(
@@ -73,7 +72,7 @@ class LoginFragment : Fragment() {
                     showLoginFailed(it)
                 }
                 loginResult.success?.let {
-                    findNavController().navigate(R.id.action_loginFragment_to_attendanceFragment)
+                    //findNavController().navigate(R.id.action_loginFragment_to_attendanceFragment)
                     //updateUiWithUser(it)
                 }
             })
diff --git a/app/src/main/res/navigation/nav_graph.xml b/app/src/main/res/navigation/nav_graph.xml
index f87aa9a..4b9c3fd 100644
--- a/app/src/main/res/navigation/nav_graph.xml
+++ b/app/src/main/res/navigation/nav_graph.xml
@@ -3,23 +3,19 @@
     xmlns:app="http://schemas.android.com/apk/res-auto"
     xmlns:tools="http://schemas.android.com/tools"
     android:id="@+id/nav_graph"
-    app:startDestination="@id/loginFragment">
+    app:startDestination="@id/attendanceListFragment">
     <fragment
         android:id="@+id/loginFragment"
         android:name="com.example.palto.ui.login.LoginFragment"
         android:label="fragment._login"
-        tools:layout="@layout/fragment_login" >
-        <action
-            android:id="@+id/action_loginFragment_to_attendanceFragment"
-            app:destination="@id/attendanceFragment" />
-    </fragment>
+        tools:layout="@layout/fragment_login" />
     <fragment
         android:id="@+id/sessionListFragment"
         android:name="com.example.palto.ui.sessionList.SessionListFragment"
         android:label="fragment_session_list"
         tools:layout="@layout/fragment_session_list" />
     <fragment
-        android:id="@+id/attendanceFragment"
+        android:id="@+id/attendanceListFragment"
         android:name="com.example.palto.ui.attendanceList.AttendanceListFragment"
         android:label="fragment_attendance_list"
         tools:layout="@layout/fragment_attendance_list" />
diff --git a/build.gradle.kts b/build.gradle.kts
index ef164ea..8e8f4ab 100644
--- a/build.gradle.kts
+++ b/build.gradle.kts
@@ -1,5 +1,5 @@
 // Top-level build file where you can add configuration options common to all sub-projects/modules.
 plugins {
-    id("com.android.application") version "8.1.4" apply false
+    id("com.android.application") version "8.2.0" apply false
     id("org.jetbrains.kotlin.android") version "1.9.0" apply false
 }
\ No newline at end of file