diff --git a/app/src/main/AndroidManifest.xml b/app/src/main/AndroidManifest.xml
index 78a728f..61da587 100644
--- a/app/src/main/AndroidManifest.xml
+++ b/app/src/main/AndroidManifest.xml
@@ -1,5 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
-<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+<manifest
+    xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:tools="http://schemas.android.com/tools">
 
     <uses-permission android:name="android.permission.NFC" />
diff --git a/app/src/main/java/com/example/palto/PaltoActivity.kt b/app/src/main/java/com/example/palto/PaltoActivity.kt
index bbfb52c..1df8c28 100644
--- a/app/src/main/java/com/example/palto/PaltoActivity.kt
+++ b/app/src/main/java/com/example/palto/PaltoActivity.kt
@@ -1,14 +1,11 @@
 package com.example.palto
 
-import android.app.Activity
 import android.nfc.NfcAdapter
 import android.nfc.Tag
 import android.os.Bundle
 import android.util.Log
 import androidx.appcompat.app.AppCompatActivity
 
-import java.net.URL
-
 
 class PaltoActivity : AppCompatActivity() {
     private var nfcAdapter: NfcAdapter? = null
diff --git a/app/src/main/java/com/example/palto/data/local/LocalDataSource.kt b/app/src/main/java/com/example/palto/data/local/LocalDataSource.kt
index 8d8c245..d05487e 100644
--- a/app/src/main/java/com/example/palto/data/local/LocalDataSource.kt
+++ b/app/src/main/java/com/example/palto/data/local/LocalDataSource.kt
@@ -1,9 +1,5 @@
 package com.example.palto.data.local
 
-import com.example.palto.data.Result
-import com.example.palto.data.model.LoggedInUser
-import java.io.IOException
-
 /**
  * Class that handles authentication w/ login credentials and retrieves user information.
  */
diff --git a/app/src/main/java/com/example/palto/data/network/ServerDataSource.kt b/app/src/main/java/com/example/palto/data/network/ServerDataSource.kt
index ad7d664..8c68892 100644
--- a/app/src/main/java/com/example/palto/data/network/ServerDataSource.kt
+++ b/app/src/main/java/com/example/palto/data/network/ServerDataSource.kt
@@ -1,9 +1,10 @@
 package com.example.palto.data.network
 
 import com.example.palto.data.Result
-import com.example.palto.data.model.LoggedInUser
-import com.example.palto.data.model.Tokens
+import com.example.palto.model.LoggedInUser
+import com.example.palto.model.Tokens
 import java.io.IOException
+import java.util.UUID
 
 /**
  * Class that handles API calls.
@@ -43,7 +44,7 @@ class ServerDataSource {
     ): Result<LoggedInUser> {
         try {
             val fakeUser = LoggedInUser(
-                java.util.UUID.randomUUID().toString(),
+                UUID.randomUUID().toString(),
                 "dede",
                 "Lucie",
                 "Doe",
diff --git a/app/src/main/java/com/example/palto/data/repository/AttendanceRepository.kt b/app/src/main/java/com/example/palto/data/repository/AttendanceRepository.kt
index e17bba6..13a8631 100644
--- a/app/src/main/java/com/example/palto/data/repository/AttendanceRepository.kt
+++ b/app/src/main/java/com/example/palto/data/repository/AttendanceRepository.kt
@@ -1,9 +1,6 @@
 package com.example.palto.data.repository
 
-import com.example.palto.data.Result
 import com.example.palto.data.network.ServerDataSource
-import com.example.palto.data.model.LoggedInUser
-import com.example.palto.data.model.Tokens
 
 /**
  *
diff --git a/app/src/main/java/com/example/palto/data/repository/LoginRepository.kt b/app/src/main/java/com/example/palto/data/repository/LoginRepository.kt
index ef52975..ad61888 100644
--- a/app/src/main/java/com/example/palto/data/repository/LoginRepository.kt
+++ b/app/src/main/java/com/example/palto/data/repository/LoginRepository.kt
@@ -2,8 +2,7 @@ package com.example.palto.data.repository
 
 import com.example.palto.data.Result
 import com.example.palto.data.network.ServerDataSource
-import com.example.palto.data.model.LoggedInUser
-import com.example.palto.data.model.Tokens
+import com.example.palto.model.LoggedInUser
 
 /**
  * Class that requests authentication and user information from the remote data source and
diff --git a/app/src/main/java/com/example/palto/data/repository/SessionRepository.kt b/app/src/main/java/com/example/palto/data/repository/SessionRepository.kt
new file mode 100644
index 0000000..3b4b4a7
--- /dev/null
+++ b/app/src/main/java/com/example/palto/data/repository/SessionRepository.kt
@@ -0,0 +1,10 @@
+package com.example.palto.data.repository
+
+import com.example.palto.data.network.ServerDataSource
+
+/**
+ *
+ */
+class SessionRepository(val dataSource: ServerDataSource) {
+    // private val cards
+}
\ No newline at end of file
diff --git a/app/src/main/java/com/example/palto/data/repository/TokensRepository.kt b/app/src/main/java/com/example/palto/data/repository/TokensRepository.kt
index 0351fc0..184f04c 100644
--- a/app/src/main/java/com/example/palto/data/repository/TokensRepository.kt
+++ b/app/src/main/java/com/example/palto/data/repository/TokensRepository.kt
@@ -1,9 +1,7 @@
 package com.example.palto.data.repository
 
-import com.example.palto.data.Result
 import com.example.palto.data.network.ServerDataSource
-import com.example.palto.data.model.LoggedInUser
-import com.example.palto.data.model.Tokens
+import com.example.palto.model.Tokens
 
 /**
  * Class that requests authentication and user information from the remote data source and
diff --git a/app/src/main/java/com/example/palto/data/model/Attendance.kt b/app/src/main/java/com/example/palto/model/Attendance.kt
similarity index 84%
rename from app/src/main/java/com/example/palto/data/model/Attendance.kt
rename to app/src/main/java/com/example/palto/model/Attendance.kt
index a73a6f7..1288725 100644
--- a/app/src/main/java/com/example/palto/data/model/Attendance.kt
+++ b/app/src/main/java/com/example/palto/model/Attendance.kt
@@ -1,4 +1,4 @@
-package com.example.palto.data.model
+package com.example.palto.model
 import java.io.Serializable
 
 /**
diff --git a/app/src/main/java/com/example/palto/model/Card.kt b/app/src/main/java/com/example/palto/model/Card.kt
new file mode 100644
index 0000000..fade8d9
--- /dev/null
+++ b/app/src/main/java/com/example/palto/model/Card.kt
@@ -0,0 +1,6 @@
+package com.example.palto.model
+import java.io.Serializable
+
+data class Card(
+    val id: String
+) : Serializable
\ No newline at end of file
diff --git a/app/src/main/java/com/example/palto/data/model/LoggedInUser.kt b/app/src/main/java/com/example/palto/model/LoggedInUser.kt
similarity index 88%
rename from app/src/main/java/com/example/palto/data/model/LoggedInUser.kt
rename to app/src/main/java/com/example/palto/model/LoggedInUser.kt
index ff8cbee..6f60811 100644
--- a/app/src/main/java/com/example/palto/data/model/LoggedInUser.kt
+++ b/app/src/main/java/com/example/palto/model/LoggedInUser.kt
@@ -1,4 +1,4 @@
-package com.example.palto.data.model
+package com.example.palto.model
 
 import java.io.Serializable
 
diff --git a/app/src/main/java/com/example/palto/data/model/StudentCard.kt b/app/src/main/java/com/example/palto/model/Session.kt
similarity index 72%
rename from app/src/main/java/com/example/palto/data/model/StudentCard.kt
rename to app/src/main/java/com/example/palto/model/Session.kt
index 3fd21dc..8a6827f 100644
--- a/app/src/main/java/com/example/palto/data/model/StudentCard.kt
+++ b/app/src/main/java/com/example/palto/model/Session.kt
@@ -1,9 +1,9 @@
-package com.example.palto.data.model
+package com.example.palto.model
 import java.io.Serializable
 
 /**
  * Data class that captures tokens for logged in users retrieved from LoginRepository
  */
-data class StudentCard(
+data class Session(
     val id: String
 ) : Serializable
\ No newline at end of file
diff --git a/app/src/main/java/com/example/palto/data/model/Tokens.kt b/app/src/main/java/com/example/palto/model/Tokens.kt
similarity index 84%
rename from app/src/main/java/com/example/palto/data/model/Tokens.kt
rename to app/src/main/java/com/example/palto/model/Tokens.kt
index 6fffdeb..fa90475 100644
--- a/app/src/main/java/com/example/palto/data/model/Tokens.kt
+++ b/app/src/main/java/com/example/palto/model/Tokens.kt
@@ -1,4 +1,4 @@
-package com.example.palto.data.model
+package com.example.palto.model
 import java.io.Serializable
 
 /**
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 501ecaf..565422c 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
@@ -4,19 +4,22 @@ 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 com.example.palto.ui.attendanceList.placeholder.PlaceholderContent.PlaceholderItem
 import com.example.palto.databinding.FragmentAttendanceItemBinding
 
 /**
- * [RecyclerView.Adapter] that can display a [PlaceholderItem].
- * TODO: Replace the implementation with code for your data type.
+ *
  */
-class AttendanceListAdapter(
-    private val values: List<PlaceholderItem>
-) : RecyclerView.Adapter<AttendanceListAdapter.ViewHolder>() {
+class AttendanceListAdapter :
+    ListAdapter<Card, AttendanceListAdapter.ViewHolder>(CardDiffCallback) {
 
-    override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): ViewHolder {
+    override fun onCreateViewHolder(
+        parent: ViewGroup,
+        viewType: Int
+    ): ViewHolder {
 
         return ViewHolder(
             FragmentAttendanceItemBinding.inflate(
@@ -28,20 +31,28 @@ class AttendanceListAdapter(
     }
 
     override fun onBindViewHolder(holder: ViewHolder, position: Int) {
-        val item = values[position]
-        holder.idView.text = item.id
-        holder.contentView.text = item.content
+        val item = getItem(position)
+        holder.cardId.text = item.id
+        //holder.contentView.text = item.content
     }
 
-    override fun getItemCount(): Int = values.size
-
-    inner class ViewHolder(binding: FragmentAttendanceItemBinding) :
-        RecyclerView.ViewHolder(binding.root) {
-        val idView: TextView = binding.itemNumber
-        val contentView: TextView = binding.content
+    inner class ViewHolder(
+        binding: FragmentAttendanceItemBinding
+    ) : RecyclerView.ViewHolder(binding.root) {
 
+        val cardId: TextView = binding.cardId
         override fun toString(): String {
-            return super.toString() + " '" + contentView.text + "'"
+            return super.toString() + " '" + cardId.text + "'"
         }
     }
+}
+
+object CardDiffCallback : DiffUtil.ItemCallback<Card>() {
+    override fun areItemsTheSame(oldItem: Card, newItem: Card): Boolean {
+        return oldItem == newItem
+    }
+
+    override fun areContentsTheSame(oldItem: Card, newItem: Card): Boolean {
+        return oldItem.id == newItem.id
+    }
 }
\ No newline at end of file
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 108aac1..598ef9e 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
@@ -9,7 +9,7 @@ import android.view.View
 import android.view.ViewGroup
 import androidx.navigation.navGraphViewModels
 import com.example.palto.R
-import com.example.palto.ui.attendanceList.placeholder.PlaceholderContent
+import com.example.palto.databinding.FragmentAttendanceListBinding
 
 /**
  * A fragment representing a list of attendances.
@@ -20,14 +20,19 @@ class AttendanceListFragment : Fragment() {
         navGraphViewModels(R.id.nav_graph)
 
     override fun onCreateView(
-        inflater: LayoutInflater, container: ViewGroup?,
+        inflater: LayoutInflater,
+        container: ViewGroup?,
         savedInstanceState: Bundle?
     ): View? {
-        val view = inflater.inflate(R.layout.fragment_attendance_list, container, false)
-        if (view is RecyclerView) {
-            view.layoutManager = LinearLayoutManager(context)
-            view.adapter = AttendanceListAdapter(PlaceholderContent.ITEMS)
+        val binding = FragmentAttendanceListBinding.inflate(inflater, container, false)
+
+        val adapter = AttendanceListAdapter()
+        binding.list.adapter = adapter
+
+        attendanceListViewModel.cardsLiveData.observe(viewLifecycleOwner) {
+            it -> adapter.submitList(it)
         }
-        return view
+
+        return binding.root
     }
 }
\ 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 fef9be7..5e366d2 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
@@ -1,34 +1,38 @@
 package com.example.palto.ui.attendanceList
 
+import androidx.lifecycle.LiveData
+import androidx.lifecycle.MutableLiveData
 import androidx.lifecycle.ViewModel
 import androidx.lifecycle.ViewModelProvider
 import com.example.palto.data.network.ServerDataSource
 import com.example.palto.data.repository.AttendanceRepository
-import com.example.palto.data.repository.LoginRepository
+import com.example.palto.model.Card
+import kotlin.random.Random
 
 class AttendanceListViewModel(
     private val attendanceRepository: AttendanceRepository
 ) : ViewModel() {
-    /*
-    private val _loginForm = MutableLiveData<LoginFormState>()
-    val loginFormState: LiveData<LoginFormState> = _loginForm
 
-    private val _loginResult = MutableLiveData<LoginResult>()
-    val loginResult: LiveData<LoginResult> = _loginResult
-    */
+    private val cardsList: MutableList<Card> = mutableListOf()
+    val cardsLiveData: LiveData<List<Card>> = MutableLiveData(cardsList)
 
-    class AttendanceListViewModelFactory : ViewModelProvider.Factory {
+    fun insertCard(cardId: String) {
+        val card = Card(cardId)
+        cardsList.add(card)
+    }
+}
 
-        //@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")
+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/attendanceList/placeholder/PlaceholderContent.kt b/app/src/main/java/com/example/palto/ui/attendanceList/placeholder/PlaceholderContent.kt
deleted file mode 100644
index 50fc373..0000000
--- a/app/src/main/java/com/example/palto/ui/attendanceList/placeholder/PlaceholderContent.kt
+++ /dev/null
@@ -1,57 +0,0 @@
-package com.example.palto.ui.attendanceList.placeholder
-
-import java.util.ArrayList
-import java.util.HashMap
-
-/**
- * Helper class for providing sample content for user interfaces created by
- * Android template wizards.
- *
- * TODO: Replace all uses of this class before publishing your app.
- */
-object PlaceholderContent {
-
-    /**
-     * An array of sample (placeholder) items.
-     */
-    val ITEMS: MutableList<PlaceholderItem> = ArrayList()
-
-    /**
-     * A map of sample (placeholder) items, by ID.
-     */
-    val ITEM_MAP: MutableMap<String, PlaceholderItem> = HashMap()
-
-    private val COUNT = 25
-
-    init {
-        // Add some sample items.
-        for (i in 1..COUNT) {
-            addItem(createPlaceholderItem(i))
-        }
-    }
-
-    private fun addItem(item: PlaceholderItem) {
-        ITEMS.add(item)
-        ITEM_MAP.put(item.id, item)
-    }
-
-    private fun createPlaceholderItem(position: Int): PlaceholderItem {
-        return PlaceholderItem(position.toString(), "Item " + position, makeDetails(position))
-    }
-
-    private fun makeDetails(position: Int): String {
-        val builder = StringBuilder()
-        builder.append("Details about Item: ").append(position)
-        for (i in 0..position - 1) {
-            builder.append("\nMore details information here.")
-        }
-        return builder.toString()
-    }
-
-    /**
-     * A placeholder item representing a piece of content.
-     */
-    data class PlaceholderItem(val id: String, val content: String, val details: String) {
-        override fun toString(): String = content
-    }
-}
\ No newline at end of file
diff --git a/app/src/main/java/com/example/palto/ui/login/LoginViewModel.kt b/app/src/main/java/com/example/palto/ui/login/LoginViewModel.kt
index 4cb896d..99ea964 100644
--- a/app/src/main/java/com/example/palto/ui/login/LoginViewModel.kt
+++ b/app/src/main/java/com/example/palto/ui/login/LoginViewModel.kt
@@ -6,7 +6,6 @@ import androidx.lifecycle.ViewModel
 import android.util.Patterns
 import androidx.lifecycle.ViewModelProvider
 import com.example.palto.data.repository.LoginRepository
-import com.example.palto.data.Result
 
 import com.example.palto.R
 import com.example.palto.data.network.ServerDataSource
diff --git a/app/src/main/java/com/example/palto/ui/sessionList/SessionListViewModel.kt b/app/src/main/java/com/example/palto/ui/sessionList/SessionListViewModel.kt
index 09235e6..d127a36 100644
--- a/app/src/main/java/com/example/palto/ui/sessionList/SessionListViewModel.kt
+++ b/app/src/main/java/com/example/palto/ui/sessionList/SessionListViewModel.kt
@@ -1,13 +1,7 @@
 package com.example.palto.ui.sessionList
 
-import androidx.lifecycle.LiveData
-import androidx.lifecycle.MutableLiveData
 import androidx.lifecycle.ViewModel
-import android.util.Patterns
 import com.example.palto.data.repository.LoginRepository
-import com.example.palto.data.Result
-
-import com.example.palto.R
 
 class SessionListViewModel(private val loginRepository: LoginRepository) : ViewModel() {
     /*
diff --git a/app/src/main/res/layout/fragment_attendance_item.xml b/app/src/main/res/layout/fragment_attendance_item.xml
index 1877568..b975c33 100644
--- a/app/src/main/res/layout/fragment_attendance_item.xml
+++ b/app/src/main/res/layout/fragment_attendance_item.xml
@@ -5,14 +5,7 @@
     android:orientation="horizontal">
 
     <TextView
-        android:id="@+id/item_number"
-        android:layout_width="wrap_content"
-        android:layout_height="wrap_content"
-        android:layout_margin="@dimen/text_margin"
-        android:textAppearance="?attr/textAppearanceListItem" />
-
-    <TextView
-        android:id="@+id/content"
+        android:id="@+id/card_̤id"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
         android:layout_margin="@dimen/text_margin"