diff --git a/dashboard_client.py b/dashboard_client.py
index 439856e..c369bd2 100644
--- a/dashboard_client.py
+++ b/dashboard_client.py
@@ -17,10 +17,17 @@ MQTT_PASSWORD = os.getenv("MQTT_PASSWORD")
 MQTT_BASE_TOPIC = os.getenv("MQTT_BASE_TOPIC", "pylokid")
 TMP_DIR = os.getenv("TMP_DIR", "/tmp")
 
+# Initialization
+logging.basicConfig(
+    level=logging.DEBUG,
+    format='%(asctime)s - %(name)s - %(levelname)s - %(message)s'
+)
+LOGGER = logging.getLogger('dashboard')
+
 PIDS = {}
 
 def on_connect(client, userdata, flags, rc):
-    print("Connected with result code "+str(rc))
+    LOGGER.info("Connected to MQTT with result code %s", str(rc))
 
     # Subscribing in on_connect() means that if we lose the connection and
     # reconnect then subscriptions will be renewed.
@@ -30,34 +37,39 @@ def on_message(client, userdata, msg):
     topic_detail = msg.topic.split("/")
     f_id = topic_detail[2]
     if topic_detail[1] == 'Einsatzausdruck_FW' and topic_detail[3] == 'pdf':
-        print('Einsatzausdruck for ' + f_id)
+        LOGGER.info("[%s] New Einsatzausdruck received", f_id)
         file_name = TMP_DIR + "/dashboard/" + f_id + ".pdf"
         file = open(file_name, "wb")
         file.write(msg.payload)
         file.close()
 
-        # process = subprocess.Popen(["/usr/bin/okular", "--presentation", file_name])
-        process = subprocess.Popen(
-            ["/usr/bin/xpdf", "-z", "width", "-fullscreen", file_name],
-            env=dict(os.environ, DISPLAY=":0")
-        )
-        PIDS[f_id] = process.pid
+        if f_id in PIDS:
+            LOGGER.info(
+                "[%s] Einsatzausdruck already being displayed with PID %s",
+                f_id,
+                str(PIDS[f_id])
+            )
+        else:
+            LOGGER.info("[%s] Displaying Einsatzausdruck with xpdf", f_id)
+            process = subprocess.Popen(
+                ["/usr/bin/xpdf", "-z", "width", "-fullscreen", file_name],
+                env=dict(os.environ, DISPLAY=":0")
+            )
+            PIDS[f_id] = process.pid
     elif topic_detail[1] == 'Einsatzprotokoll':
-        print('Einsatzprotokoll for ' + f_id)
-        os.kill(PIDS[f_id], 9)
+        LOGGER.info("[%s] New Einsatzprotokoll received", f_id)
+        if f_id in PIDS:
+            LOGGER.info("[%s] Killing xpdf PID %s", f_id, str(PIDS[f_id]))
+            os.kill(PIDS[f_id], 9)
+            PIDS.pop(f_id)
+        else:
+            LOGGER.info("[%s] No xpdf PID found", f_id)
     else:
-        print('Unbekannt')
+        LOGGER.info("[%s] Unknown", topic_detail[1])
 
 def main():
     """ main """
 
-    # Logging configuration
-    logging.basicConfig(
-        level=logging.DEBUG,
-        format='%(asctime)s - %(name)s - %(levelname)s - %(message)s'
-    )
-    logger = logging.getLogger('dashboard')
-
     mqtt_client = mqtt.Client()
     mqtt_client.on_connect = on_connect
     mqtt_client.on_message = on_message
@@ -67,7 +79,6 @@ def main():
     mqtt_client.connect(MQTT_SERVER, 8883, 60)
     mqtt_client.loop_forever()
 
-
 if __name__ == '__main__':
     try:
         main()