diff --git a/billard/migrations/0005_auto_20170206_1926.py b/billard/migrations/0005_auto_20170206_1926.py
new file mode 100644
index 0000000..232d6a0
--- /dev/null
+++ b/billard/migrations/0005_auto_20170206_1926.py
@@ -0,0 +1,20 @@
+# -*- coding: utf-8 -*-
+# Generated by Django 1.10.5 on 2017-02-06 18:26
+from __future__ import unicode_literals
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('billard', '0004_accounting'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='locationdata',
+            name='location_id',
+            field=models.UUIDField(),
+        ),
+    ]
diff --git a/billard/models.py b/billard/models.py
index 17f32f2..efcd2b5 100644
--- a/billard/models.py
+++ b/billard/models.py
@@ -1,12 +1,15 @@
 import uuid
 from django.db import models
 from django.contrib.auth.models import User
-from datetime import datetime
+from datetime import datetime, timezone
 from . import utils
+from . import tasks
+from django.contrib.auth.models import User
+from django.db.models.signals import post_save
 
 
 class LocationData(models.Model):
-    location_id = models.CharField(max_length=32, blank=False, null=False, verbose_name="Standort-ID")
+    location_id = models.UUIDField(blank=False, null=False, verbose_name="Standort-ID")
     table_no = models.IntegerField(blank=False, null=False, verbose_name="Tischnummer")
     tst = models.DateTimeField(blank=False, null=False, verbose_name="Zeitstempel")
     on_off = models.BooleanField(blank=False, null=False, verbose_name="Ein/Ausgebucht")
@@ -55,7 +58,7 @@ class Client(models.Model):
         t = Accounting.objects.filter(client_id=self.id, desk_no=desk_no)[:3][::-1]
         a = t[t.__len__() - 1]
         if a.time_to is None:
-            prize = utils.get_prize_for(start=a.time_from, end=datetime.now(), pph=pht)
+            prize = utils.get_prize_for(start=a.time_from, end=datetime.now(timezone.utc), pph=pht)
             if prize != a.prize:
                 a.prize = prize
         return t
@@ -86,4 +89,10 @@ class Accounting(models.Model):
     class Meta:
         ordering = ['-time_from']
         verbose_name = "Buchhaltungseintrag"
-        verbose_name_plural = "Buchhaltungseinträge"
\ No newline at end of file
+        verbose_name_plural = "Buchhaltungseinträge"
+
+
+def update_location_data(sender, instance, **kwargs):
+    tasks.process_location_data.delay()
+
+post_save.connect(update_location_data, sender=LocationData)
diff --git a/billard/tasks.py b/billard/tasks.py
new file mode 100644
index 0000000..0e81fef
--- /dev/null
+++ b/billard/tasks.py
@@ -0,0 +1,31 @@
+from __future__ import absolute_import, unicode_literals
+from celery import shared_task
+from . import models
+from datetime import datetime
+from . import utils
+
+
+@shared_task
+def process_location_data():
+    data = models.LocationData.objects.filter(processed=False)
+    for ld in data:
+        cli = models.Client.objects.get(uuid=ld.location_id)
+        ac = models.Accounting.objects.filter(client=cli).order_by('time_from').reverse()[0]
+        if ld.on_off:
+            if ac.time_to is None:
+                ac.time_to = datetime.now()
+                ac.save()
+            ac = models.Accounting(
+                client=cli,
+                desk_no=ld.table_no,
+                time_from=ld.tst,
+            )
+            ac.save()
+            ld.processed=True
+            ld.save()
+        else:
+            ac.time_to = ld.tst
+            ac.prize = utils.get_prize_for(start=ac.time_from, end=ac.time_to, pph=cli.desk1_prize_ht)
+            ac.save()
+            ld.processed=True
+            ld.save()
diff --git a/caromserver/__init__.py b/caromserver/__init__.py
index e69de29..3b91b07 100644
--- a/caromserver/__init__.py
+++ b/caromserver/__init__.py
@@ -0,0 +1,7 @@
+from __future__ import absolute_import, unicode_literals
+
+# This will make sure the app is always imported when
+# Django starts so that shared_task will use this app.
+from .celery import app as celery_app
+
+__all__ = ['celery_app']
diff --git a/caromserver/celery.py b/caromserver/celery.py
new file mode 100644
index 0000000..4659ddc
--- /dev/null
+++ b/caromserver/celery.py
@@ -0,0 +1,27 @@
+from __future__ import absolute_import, unicode_literals
+import os
+import django
+from celery import Celery
+
+# set the default Django settings module for the 'celery' program.
+os.environ.setdefault('DJANGO_SETTINGS_MODULE', 'caromserver.settings')
+
+app = Celery('caromserver')
+
+# Using a string here means the worker don't have to serialize
+# the configuration object to child processes.
+# - namespace='CELERY' means all celery-related configuration keys
+#   should have a `CELERY_` prefix.
+app.config_from_object('django.conf:settings')
+
+# Load task modules from all registered Django app configs.
+
+os.environ.setdefault("DJANGO_SETTINGS_MODULE", "caromserver.settings")
+django.setup()
+
+app.autodiscover_tasks(['billard'])
+
+
+@app.task(bind=True)
+def debug_task(self):
+    print('Request: {0!r}'.format(self.request))
\ No newline at end of file
diff --git a/caromserver/settings.py b/caromserver/settings.py
index fe18ef8..df5161a 100644
--- a/caromserver/settings.py
+++ b/caromserver/settings.py
@@ -138,6 +138,15 @@ LOGOUT_URL = 'logout'
 LOGIN_REDIRECT_URL = 'carom_index'
 LOGOUT_REDIRECT_URL = 'carom_index'
 
+# CELERY STUFF
+BROKER_URL = 'redis://localhost:6379'
+CELERY_RESULT_BACKEND = 'redis://localhost:6379'
+CELERY_ACCEPT_CONTENT = ['application/json']
+CELERY_TASK_SERIALIZER = 'json'
+CELERY_RESULT_SERIALIZER = 'json'
+CELERY_TIMEZONE = 'Europe/Berlin'
+
+
 STATIC_ROOT = "/srv/carom/carom-server/static/"
 
 try: