diff --git a/MobileAuthApp/app/src/main/java/com/tarkvaraprojekt/mobileauthapp/HomeFragment.kt b/MobileAuthApp/app/src/main/java/com/tarkvaraprojekt/mobileauthapp/HomeFragment.kt
index 8b85518..659d131 100644
--- a/MobileAuthApp/app/src/main/java/com/tarkvaraprojekt/mobileauthapp/HomeFragment.kt
+++ b/MobileAuthApp/app/src/main/java/com/tarkvaraprojekt/mobileauthapp/HomeFragment.kt
@@ -13,10 +13,13 @@ import android.util.Log
 import android.view.LayoutInflater
 import android.view.View
 import android.view.ViewGroup
+import android.widget.TextView
+import androidx.appcompat.app.AlertDialog
 import androidx.appcompat.app.AppCompatActivity
 import androidx.fragment.app.Fragment
 import androidx.fragment.app.activityViewModels
 import androidx.navigation.fragment.findNavController
+import com.google.android.material.dialog.MaterialAlertDialogBuilder
 import com.tarkvaraprojekt.mobileauthapp.NFC.Comms
 import com.tarkvaraprojekt.mobileauthapp.databinding.FragmentHomeBinding
 import com.tarkvaraprojekt.mobileauthapp.model.ParametersViewModel
@@ -166,6 +169,20 @@ class HomeFragment : Fragment() {
         displayStates()
     }
 
+    /**
+     * Displays a help message to the user explaining what the CAN is
+     */
+    private fun displayMessage() {
+        val dialog = MaterialAlertDialogBuilder(requireContext())
+            .setTitle(getString(R.string.can_question))
+            .setMessage(getString(R.string.can_explanation))
+            .setPositiveButton(R.string.return_text){_, _ -> }
+            .show()
+        val title = dialog.findViewById<TextView>(R.id.alertTitle)
+        title?.textSize = 24F
+
+    }
+
     /**
      * Informs user whether the ID card can be detected or not.
      */
@@ -174,6 +191,7 @@ class HomeFragment : Fragment() {
             binding!!.detectionActionText.text = getString(R.string.action_detect)
             enableReaderMode()
             binding!!.homeActionButton.visibility = View.GONE
+            binding!!.homeHelpButton.visibility = View.GONE
         } else {
             binding!!.detectionActionText.text = getString(R.string.action_detect_unavailable)
             binding!!.homeActionButton.text = getString(R.string.add_can_text)
@@ -181,7 +199,11 @@ class HomeFragment : Fragment() {
                 val action = HomeFragmentDirections.actionHomeFragmentToCanFragment(saving = true, fromhome = true)
                 findNavController().navigate(action)
             }
+            binding!!.homeHelpButton.setOnClickListener {
+                displayMessage()
+            }
             binding!!.homeActionButton.visibility = View.VISIBLE
+            binding!!.homeHelpButton.visibility = View.VISIBLE
         }
     }
 
diff --git a/MobileAuthApp/app/src/main/res/layout/fragment_home.xml b/MobileAuthApp/app/src/main/res/layout/fragment_home.xml
index 163c5eb..899d161 100644
--- a/MobileAuthApp/app/src/main/res/layout/fragment_home.xml
+++ b/MobileAuthApp/app/src/main/res/layout/fragment_home.xml
@@ -112,4 +112,17 @@
         app:layout_constraintStart_toStartOf="parent"
         app:layout_constraintTop_toBottomOf="@id/id_card_detection"/>
 
+    <Button
+        android:id="@+id/home_help_button"
+        android:textSize="@dimen/regular_text"
+        android:text="@string/help_text"
+        android:layout_marginTop="@dimen/margin_small"
+        android:layout_marginStart="@dimen/margin_huge"
+        android:layout_width="0dp"
+        android:layout_height="wrap_content"
+        style="?attr/materialButtonOutlinedStyle"
+        android:visibility="gone"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toBottomOf="@id/home_action_button"/>
+
 </androidx.constraintlayout.widget.ConstraintLayout>
\ No newline at end of file
diff --git a/MobileAuthApp/app/src/main/res/values-en/strings.xml b/MobileAuthApp/app/src/main/res/values-en/strings.xml
index 586f271..0dce178 100644
--- a/MobileAuthApp/app/src/main/res/values-en/strings.xml
+++ b/MobileAuthApp/app/src/main/res/values-en/strings.xml
@@ -26,6 +26,9 @@
     <string name="pin_status_negative">PIN 1 not saved</string>
     <string name="can_status_saved">CAN saved</string>
     <string name="can_status_negative">CAN not saved</string>
+    <string name="help_text">HELP</string>
+    <string name="can_question">What is CAN?</string>
+    <string name="can_explanation">CAN is a 6 digit code that is needed to communicate with an ID card. It can be found on the ID card under the card holder\'s picture with a title KASUTAJA ALLKIRI/HOLDER\'S SIGNATURE.</string>
 
     <!-- string resources for PinFragment -->
     <string name="pin_view">Please enter PIN 1</string>
diff --git a/MobileAuthApp/app/src/main/res/values-et/strings.xml b/MobileAuthApp/app/src/main/res/values-et/strings.xml
index 1faaa07..44986c7 100644
--- a/MobileAuthApp/app/src/main/res/values-et/strings.xml
+++ b/MobileAuthApp/app/src/main/res/values-et/strings.xml
@@ -25,6 +25,9 @@
     <string name="pin_status_negative">PIN 1 ei ole salvestatud</string>
     <string name="can_status_saved">CAN on salvestatud</string>
     <string name="can_status_negative">CAN ei ole salvestatud</string>
+    <string name="help_text">INFO</string>
+    <string name="can_question">Mis on CAN?</string>
+    <string name="can_explanation">CAN on 6 kohaline numbritest koosnev kood, mida on vaja ID kaardiga suhtlemiseks. CAN-i leiab ID kaardilt omaniku pildi alt pealkirjaga KASUTAJA ALLKIRI/HOLDER\'S SIGNATURE.</string>
 
     <!-- string resources for PinFragment -->
     <string name="pin_view">Palun sisesta PIN 1</string>
diff --git a/MobileAuthApp/app/src/main/res/values/strings.xml b/MobileAuthApp/app/src/main/res/values/strings.xml
index f740a21..1a5d79d 100644
--- a/MobileAuthApp/app/src/main/res/values/strings.xml
+++ b/MobileAuthApp/app/src/main/res/values/strings.xml
@@ -24,6 +24,9 @@
     <string name="pin_status_negative">PIN 1 not saved</string>
     <string name="can_status_saved">CAN saved</string>
     <string name="can_status_negative">CAN not saved</string>
+    <string name="help_text">HELP</string>
+    <string name="can_question">What is CAN?</string>
+    <string name="can_explanation">CAN is a 6 digit code that is needed to communicate with an ID card. It can be found on the ID card under the card holder\'s picture with a title KASUTAJA ALLKIRI/HOLDER\'S SIGNATURE.</string>
 
     <!-- string resources for PinFragment -->
     <string name="pin_view">Please enter PIN 1</string>