diff --git a/reader.py b/reader.py
index 41c2bc7..2cc94ba 100644
--- a/reader.py
+++ b/reader.py
@@ -40,11 +40,19 @@ class Reader:
                             raise Exception(f"Could not get machine {self.machine_urn}. Machine does not exist or insufficient permissions")
 
                         if ma.state == "inUse":
-                            await ma.inuse.giveBack().a_wait()
-                            #await client.publish(f"fabreader/{self.reader_id}/display/title", payload="Free", qos=2, retain=False)
+                            if ma.inuse == None:
+                                await client.publish(f"fabreader/{self.reader_id}/display/info", payload="Wrong User", qos=1, retain=False)
+                                await asyncio.sleep(2)
+                                await client.publish(f"fabreader/{self.reader_id}/display/info", payload="", qos=1, retain=False)
+                            else:
+                                await ma.inuse.giveBack().a_wait()
                         else:
-                            await ma.use.use().a_wait()
-                            #await client.publish(f"fabreader/{self.reader_id}/display/title", payload="In Use", qos=2, retain=False)
+                            if ma.use == None:
+                                await client.publish(f"fabreader/{self.reader_id}/display/info", payload="No Authorization", qos=1, retain=False)
+                                await asyncio.sleep(2)
+                                await client.publish(f"fabreader/{self.reader_id}/display/info", payload="", qos=1, retain=False)
+                            else:
+                                await ma.use.use().a_wait()
                         
                         await client.publish(f"fabreader/{self.reader_id}/stopOTA", payload="", qos=2, retain=False)