diff --git a/app/src/main/res/layout/fragment_about.xml b/app/src/main/res/layout/fragment_about.xml
index 42f448d..c88928d 100644
--- a/app/src/main/res/layout/fragment_about.xml
+++ b/app/src/main/res/layout/fragment_about.xml
@@ -283,6 +283,31 @@
                 </LinearLayout>
             </androidx.cardview.widget.CardView>
 
+            <androidx.cardview.widget.CardView
+                app:cardUseCompatPadding="true"
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content">
+                <LinearLayout
+                    android:padding="8dp"
+                    android:orientation="vertical"
+                    android:layout_width="match_parent"
+                    android:layout_height="wrap_content">
+
+                    <TextView
+                        android:textAppearance="?android:textAppearanceLarge"
+                        android:text="@string/about_developer_key_title"
+                        android:layout_width="match_parent"
+                        android:layout_height="wrap_content" />
+
+                    <TextView
+                        android:textAppearance="?android:textAppearanceMedium"
+                        android:text="@string/about_developer_key_text"
+                        android:layout_width="match_parent"
+                        android:layout_height="wrap_content" />
+
+                </LinearLayout>
+            </androidx.cardview.widget.CardView>
+
         </LinearLayout>
     </ScrollView>
 
diff --git a/app/src/main/res/values-de/strings-about.xml b/app/src/main/res/values-de/strings-about.xml
index f815c4f..bbc0366 100644
--- a/app/src/main/res/values-de/strings-about.xml
+++ b/app/src/main/res/values-de/strings-about.xml
@@ -40,4 +40,6 @@
 
     <string name="about_diagnose_title">Fehlerdiagnose</string>
     <string name="about_diagnose_text">Tippen Sie hier, um Details anzuzeigen, die bei einer Fehlerdiagnose helfen können</string>
+
+    <string name="about_developer_key_title">Fingerabdruck des GPG-Schlüssels des Entwicklers</string>
 </resources>
diff --git a/app/src/main/res/values/strings-about.xml b/app/src/main/res/values/strings-about.xml
index c1c7b8b..386e9df 100644
--- a/app/src/main/res/values/strings-about.xml
+++ b/app/src/main/res/values/strings-about.xml
@@ -74,4 +74,7 @@
 
     <string name="about_diagnose_title">Error diagnose</string>
     <string name="about_diagnose_text">Tap here to access details which help diagnosing errors</string>
+
+    <string name="about_developer_key_title">Developer GPG-Key fingerprint</string>
+    <string name="about_developer_key_text" translatable="false">2E5C672DE893055D04F5B7BC36B449FB5364BDC4</string>
 </resources>