diff --git a/coinmanager/coinc/templates/coinc/country.html b/coinmanager/coinc/templates/coinc/country.html
index 27992f5..bbb18c4 100644
--- a/coinmanager/coinc/templates/coinc/country.html
+++ b/coinmanager/coinc/templates/coinc/country.html
@@ -1,5 +1,10 @@
-{% if single_country %}{% include 'header.html' with title=country.name %}
-{% include 'coinc/controlbar.html' with users=users %}{% endif %}
+{% if single_country %}{% include 'header.html' with title=country.name %}{% endif %}
+{% if maintenance_mode %}
+    <div class="alert alert-warning">
+      <h4 class="alert-heading">Wartungsarbeiten</h4>
+      <p class="mb-0">Es können im Moment keine Änderungen an der Münztabelle vorgenommen werden</p>
+    </div>
+{% elif logged_in %}{% include 'coinc/controlbar.html' with users=users %}{% endif %}
     <div class="container-fluid">
       <table name="{{ country.name_iso }}">
         <thead>
diff --git a/coinmanager/coinc/templates/coinc/index.html b/coinmanager/coinc/templates/coinc/index.html
index d44666b..c97bc28 100644
--- a/coinmanager/coinc/templates/coinc/index.html
+++ b/coinmanager/coinc/templates/coinc/index.html
@@ -4,4 +4,4 @@
       {% include 'coinc/filter_country.html' with countrys=countrys %}
     {% else %}
     <p>Trage zuerst Länder im Adminbereich ein.</p>{% endif %}
-{% include 'footer.html' with title='Münzsammlung' %}
+{% include 'footer.html' %}
diff --git a/coinmanager/coinc/urls.py b/coinmanager/coinc/urls.py
index ad5642d..46eb863 100644
--- a/coinmanager/coinc/urls.py
+++ b/coinmanager/coinc/urls.py
@@ -26,8 +26,7 @@ from . import views
 app_name = 'coinc'
 urlpatterns = [
     path('', views.index, name='index'),
-    path('statistik', views.statistic, name='statistic'),
+    #path('statistik', views.statistic, name='statistic'),
     path('<str:name_iso>', views.detail_country, name='country'),
     path('add/user/<str:username>/color/<str:color>', views.add_user, name='add_user'),
-    path('add/coin', views.add_coin, name='add_coin')
-]
+    path('add/coin', views.add_coin, name='add_coin') ]
diff --git a/coinmanager/coinc/views.py b/coinmanager/coinc/views.py
index 381066c..cfbb917 100644
--- a/coinmanager/coinc/views.py
+++ b/coinmanager/coinc/views.py
@@ -20,6 +20,7 @@
 from datetime import datetime, date
 from json import dumps
 
+from django.conf import settings
 from django.http import HttpResponse, Http404
 from django.template import loader
 from django.template.defaultfilters import register
@@ -72,10 +73,18 @@ def detail_country(request, name_iso):
     try:
         country = Country.objects.get(name_iso=name_iso)
     except Country.DoesNotExist:
-        raise Http404(f"Das Land '{name_iso}' ist nicht vorhanden")
+        raise Http404(f"Das Land '{name_iso}' existiert nicht.")
 
     context = show_country(country, single_country=True)
 
+    password = 'foobar'
+    password_try = request.GET.get('p', '')
+    if password_try == password:
+        if settings.MAINTENANCE_MODE_READ_ONLY:
+            context['maintenance_mode'] = True
+        else:
+            context['logged_in'] = True
+
     return HttpResponse(template.render(context, request))
 
 
diff --git a/coinmanager/coinmanager/settings.py b/coinmanager/coinmanager/settings.py
index 1c45772..878b25e 100644
--- a/coinmanager/coinmanager/settings.py
+++ b/coinmanager/coinmanager/settings.py
@@ -119,3 +119,6 @@ USE_TZ = True
 # https://docs.djangoproject.com/en/3.0/howto/static-files/
 
 STATIC_URL = '/static/'
+
+# Maintenance Mode
+MAINTENANCE_MODE_READ_ONLY = True