diff --git a/app/src/main/java/protect/card_locker/LoyaltyCardCursorAdapter.java b/app/src/main/java/protect/card_locker/LoyaltyCardCursorAdapter.java
index 84968d753..4ad640955 100644
--- a/app/src/main/java/protect/card_locker/LoyaltyCardCursorAdapter.java
+++ b/app/src/main/java/protect/card_locker/LoyaltyCardCursorAdapter.java
@@ -105,6 +105,12 @@ public class LoyaltyCardCursorAdapter extends BaseCursorAdapter<LoyaltyCardCurso
             inputHolder.setNoteField(null);
         }
 
+        if (mLoyaltyCardListDisplayOptions.showingCardId() && !loyaltyCard.cardId.isEmpty()) {
+            inputHolder.setExtraField(inputHolder.mCardIdField, loyaltyCard.cardId, null, showDivider);
+        } else {
+            inputHolder.setExtraField(inputHolder.mCardIdField, null, null, false);
+        }
+
         if (mLoyaltyCardListDisplayOptions.showingBalance() && !loyaltyCard.balance.equals(new BigDecimal("0"))) {
             inputHolder.setExtraField(inputHolder.mBalanceField, Utils.formatBalance(mContext, loyaltyCard.balance, loyaltyCard.balanceType), null, showDivider);
         } else {
@@ -211,7 +217,7 @@ public class LoyaltyCardCursorAdapter extends BaseCursorAdapter<LoyaltyCardCurso
 
     public class LoyaltyCardListItemViewHolder extends RecyclerView.ViewHolder {
 
-        public TextView mCardText, mStoreField, mNoteField, mBalanceField, mValidFromField, mExpiryField;
+        public TextView mCardText, mStoreField, mNoteField, mCardIdField, mBalanceField, mValidFromField, mExpiryField;
         public ImageView mCardIcon, mTickIcon;
         public MaterialCardView mRow;
         public ConstraintLayout mStar, mArchived;
@@ -224,6 +230,7 @@ public class LoyaltyCardCursorAdapter extends BaseCursorAdapter<LoyaltyCardCurso
             mDivider = loyaltyCardLayoutBinding.infoDivider;
             mStoreField = loyaltyCardLayoutBinding.store;
             mNoteField = loyaltyCardLayoutBinding.note;
+            mCardIdField = loyaltyCardLayoutBinding.cardId;
             mBalanceField = loyaltyCardLayoutBinding.balance;
             mValidFromField = loyaltyCardLayoutBinding.validFrom;
             mExpiryField = loyaltyCardLayoutBinding.expiry;
diff --git a/app/src/main/java/protect/card_locker/LoyaltyCardListDisplayOptionsManager.java b/app/src/main/java/protect/card_locker/LoyaltyCardListDisplayOptionsManager.java
index 9ece34ed3..23c911d91 100644
--- a/app/src/main/java/protect/card_locker/LoyaltyCardListDisplayOptionsManager.java
+++ b/app/src/main/java/protect/card_locker/LoyaltyCardListDisplayOptionsManager.java
@@ -35,6 +35,7 @@ public class LoyaltyCardListDisplayOptionsManager {
 
     private boolean mShowNameBelowThumbnail;
     private boolean mShowNote;
+    private boolean mShowCardId;
     private boolean mShowBalance;
     private boolean mShowValidity;
     private boolean mShowArchivedCards;
@@ -50,6 +51,7 @@ public class LoyaltyCardListDisplayOptionsManager {
                 Context.MODE_PRIVATE);
         mShowNameBelowThumbnail = mCardDetailsPref.getBoolean(mContext.getString(R.string.sharedpreference_card_details_show_name_below_thumbnail), false);
         mShowNote = mCardDetailsPref.getBoolean(mContext.getString(R.string.sharedpreference_card_details_show_note), true);
+        mShowCardId = mCardDetailsPref.getBoolean(mContext.getString(R.string.sharedpreference_card_details_show_card_id), false);
         mShowBalance = mCardDetailsPref.getBoolean(mContext.getString(R.string.sharedpreference_card_details_show_balance), true);
         mShowValidity = mCardDetailsPref.getBoolean(mContext.getString(R.string.sharedpreference_card_details_show_validity), true);
         mShowArchivedCards = mCardDetailsPref.getBoolean(mContext.getString(R.string.sharedpreference_card_details_show_archived_cards), true);
@@ -83,6 +85,17 @@ public class LoyaltyCardListDisplayOptionsManager {
         return mShowNote;
     }
 
+    public void showCardId(boolean show) {
+        mShowCardId = show;
+        mRefreshCardsCallback.run();
+
+        saveDetailState(R.string.sharedpreference_card_details_show_card_id, show);
+    }
+
+    public boolean showingCardId() {
+        return mShowCardId;
+    }
+
     public void showBalance(boolean show) {
         mShowBalance = show;
         mRefreshCardsCallback.run();
@@ -137,6 +150,11 @@ public class LoyaltyCardListDisplayOptionsManager {
                 showingNote(),
                 this::showNote
         ));
+        displayOptions.add(new LoyaltyCardDisplayOption(
+                mContext.getString(R.string.show_card_id),
+                showingCardId(),
+                this::showCardId
+        ));
         displayOptions.add(new LoyaltyCardDisplayOption(
                 mContext.getString(R.string.show_balance),
                 showingBalance(),
diff --git a/app/src/main/res/drawable/ic_card_id_24dp.xml b/app/src/main/res/drawable/ic_card_id_24dp.xml
new file mode 100644
index 000000000..eddfb60f2
--- /dev/null
+++ b/app/src/main/res/drawable/ic_card_id_24dp.xml
@@ -0,0 +1,10 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="24"
+    android:viewportHeight="24"
+    android:tint="?attr/colorControlNormal">
+    <path
+        android:fillColor="@android:color/white"
+        android:pathData="M2,6h2v12L2,18L2,6zM5,6h1v12L5,18L5,6zM7,6h3v12L7,18L7,6zM11,6h1v12h-1L11,6zM13,6h2v12h-2L13,6zM16,6h2v12h-2L16,6zM19,6h1v12h-1L19,6zM21,6h1v12h-1L21,6z"/>
+</vector>
diff --git a/app/src/main/res/layout/loyalty_card_layout.xml b/app/src/main/res/layout/loyalty_card_layout.xml
index 34b745b16..e6f07a52f 100644
--- a/app/src/main/res/layout/loyalty_card_layout.xml
+++ b/app/src/main/res/layout/loyalty_card_layout.xml
@@ -158,10 +158,31 @@
             android:visibility="gone"
             tools:visibility="visible"
             app:layout_constraintTop_toBottomOf="@+id/note"
-            app:layout_constraintBottom_toTopOf="@+id/balance"
+            app:layout_constraintBottom_toTopOf="@+id/cardId"
             app:layout_constraintEnd_toEndOf="parent"
             app:layout_constraintStart_toStartOf="parent"/>
 
+        <TextView
+            android:id="@+id/cardId"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:gravity="center_vertical"
+            android:layout_marginStart="8dp"
+            android:layout_marginEnd="8dp"
+            android:layout_marginBottom="4dp"
+            android:textAppearance="?attr/textAppearanceBody2"
+            app:drawableLeftCompat="@drawable/ic_card_id_24dp"
+            android:drawablePadding="4dp"
+            android:maxLines="1"
+            android:ellipsize="end"
+            android:visibility="gone"
+            app:layout_constraintTop_toBottomOf="@+id/info_divider"
+            app:layout_constraintBottom_toTopOf="@+id/balance"
+            app:layout_constraintEnd_toEndOf="parent"
+            app:layout_constraintStart_toStartOf="parent"
+            tools:visibility="visible"
+            tools:text="1234567890"/>
+
         <TextView
             android:id="@+id/balance"
             android:layout_width="match_parent"
@@ -174,7 +195,7 @@
             app:drawableLeftCompat="@drawable/ic_baseline_payments_24"
             android:drawablePadding="4dp"
             android:visibility="gone"
-            app:layout_constraintTop_toBottomOf="@+id/info_divider"
+            app:layout_constraintTop_toBottomOf="@+id/cardId"
             app:layout_constraintBottom_toTopOf="@+id/validFrom"
             app:layout_constraintEnd_toEndOf="parent"
             app:layout_constraintStart_toStartOf="parent"
diff --git a/app/src/main/res/values/strings.xml b/app/src/main/res/values/strings.xml
index 3cbdea079..566e591e7 100644
--- a/app/src/main/res/values/strings.xml
+++ b/app/src/main/res/values/strings.xml
@@ -280,10 +280,12 @@
     <string name="show_note">Show note</string>
     <string name="show_balance">Show balance</string>
     <string name="show_validity">Show validity</string>
+    <string name="show_card_id">Show card ID</string>
     <string name="sharedpreference_card_details_show_name_below_thumbnail" translatable="false">sharedpreference_card_details_show_name_below_thumbnail</string>
     <string name="sharedpreference_card_details_show_note" translatable="false">sharedpreference_card_details_show_note</string>
     <string name="sharedpreference_card_details_show_balance" translatable="false">sharedpreference_card_details_show_balance</string>
     <string name="sharedpreference_card_details_show_validity" translatable="false">sharedpreference_card_details_show_validity</string>
+    <string name="sharedpreference_card_details_show_card_id" translatable="false">sharedpreference_card_details_show_card_id</string>
     <string name="sharedpreference_card_details_show_archived_cards" translatable="false">sharedpreference_card_details_show_archived_cards</string>
     <string name="settings_category_title_cards">Card view</string>
     <string name="settings_category_title_cards_overview">Cards overview</string>
diff --git a/app/src/test/java/protect/card_locker/MainActivityTest.java b/app/src/test/java/protect/card_locker/MainActivityTest.java
index 754360f21..503eac757 100644
--- a/app/src/test/java/protect/card_locker/MainActivityTest.java
+++ b/app/src/test/java/protect/card_locker/MainActivityTest.java
@@ -20,6 +20,7 @@ import android.widget.TextView;
 
 import androidx.appcompat.widget.SearchView;
 import androidx.recyclerview.widget.RecyclerView;
+import androidx.test.core.app.ApplicationProvider;
 
 import com.google.android.material.tabs.TabLayout;
 import com.google.zxing.BarcodeFormat;
@@ -116,6 +117,76 @@ public class MainActivityTest {
         database.close();
     }
 
+    @Test
+    public void cardIdHiddenByDefault() {
+        ActivityController activityController = Robolectric.buildActivity(MainActivity.class).create();
+
+        Activity mainActivity = (Activity) activityController.get();
+        activityController.start();
+        activityController.resume();
+        activityController.visible();
+
+        RecyclerView list = mainActivity.findViewById(R.id.list);
+
+        SQLiteDatabase database = TestHelpers.getEmptyDb(mainActivity).getWritableDatabase();
+        DBHelper.insertLoyaltyCard(database, "store", "", null, null, new BigDecimal("0"), null, "1234567890", null, CatimaBarcode.fromBarcode(BarcodeFormat.UPC_A), StandardCharsets.ISO_8859_1, Color.BLACK, 0, null, 0);
+
+        activityController.pause();
+        activityController.resume();
+        activityController.visible();
+
+        assertEquals(1, list.getAdapter().getItemCount());
+
+        // Make sure there is enough space to render all
+        list.measure(0, 0);
+        list.layout(0, 0, 100, 1000);
+
+        // Card ID is hidden by default
+        TextView cardIdField = list.findViewHolderForAdapterPosition(0).itemView.findViewById(R.id.cardId);
+        assertEquals(View.GONE, cardIdField.getVisibility());
+
+        database.close();
+    }
+
+    @Test
+    public void showCardIdDisplayOption() {
+        // The display option is read in the adapter's constructor (during onCreate), so the
+        // preference must be set before the activity is built.
+        SharedPreferences cardDetailsPref = ApplicationProvider.getApplicationContext().getSharedPreferences(
+                ApplicationProvider.getApplicationContext().getString(R.string.sharedpreference_card_details),
+                Activity.MODE_PRIVATE);
+        cardDetailsPref.edit().putBoolean(
+                ApplicationProvider.getApplicationContext().getString(R.string.sharedpreference_card_details_show_card_id), true).apply();
+
+        ActivityController activityController = Robolectric.buildActivity(MainActivity.class).create();
+
+        Activity mainActivity = (Activity) activityController.get();
+        activityController.start();
+        activityController.resume();
+        activityController.visible();
+
+        RecyclerView list = mainActivity.findViewById(R.id.list);
+
+        SQLiteDatabase database = TestHelpers.getEmptyDb(mainActivity).getWritableDatabase();
+        DBHelper.insertLoyaltyCard(database, "store", "", null, null, new BigDecimal("0"), null, "1234567890", null, CatimaBarcode.fromBarcode(BarcodeFormat.UPC_A), StandardCharsets.ISO_8859_1, Color.BLACK, 0, null, 0);
+
+        activityController.pause();
+        activityController.resume();
+        activityController.visible();
+
+        assertEquals(1, list.getAdapter().getItemCount());
+
+        // Make sure there is enough space to render all
+        list.measure(0, 0);
+        list.layout(0, 0, 100, 1000);
+
+        TextView cardIdField = list.findViewHolderForAdapterPosition(0).itemView.findViewById(R.id.cardId);
+        assertEquals(View.VISIBLE, cardIdField.getVisibility());
+        assertEquals("1234567890", cardIdField.getText().toString());
+
+        database.close();
+    }
+
     @Test
     public void addFourLoyaltyCardsTwoStarred()  // Main screen showing starred cards on top correctly
     {
@@ -510,4 +581,4 @@ public class MainActivityTest {
 
         database.close();
     }
-}
\ No newline at end of file
+}