diff --git a/imaginaerraum_door_admin/__init__.py b/imaginaerraum_door_admin/__init__.py
index a31631a..71bda1f 100644
--- a/imaginaerraum_door_admin/__init__.py
+++ b/imaginaerraum_door_admin/__init__.py
@@ -80,6 +80,8 @@ def create_app():
     )
     app.config.from_envvar('APPLICATION_SETTINGS')
 
+    logging.basicConfig(filename=app.config['LOG_FILE'], level=logging.INFO)
+
     token_file = Path(app.config.get('TOKEN_FILE'))
     if not token_file.exists():
         app.logger.warning(
diff --git a/imaginaerraum_door_admin/door_handle.py b/imaginaerraum_door_admin/door_handle.py
index b7dd394..daeb169 100644
--- a/imaginaerraum_door_admin/door_handle.py
+++ b/imaginaerraum_door_admin/door_handle.py
@@ -30,7 +30,7 @@ class DoorHandle:
             self.nfc_sock.connect(nfc_socket)
             self.logger.info(f"Connected to NFC socket at {nfc_socket}.")
         except Exception as e:
-            print(f"Could not connect to NFC socket at {nfc_socket}. "
+            self.logger.error(f"Could not connect to NFC socket at {nfc_socket}. "
                   f"Exception: {e}")
             self.nfc_sock = None
             #raise
@@ -77,11 +77,13 @@ class DoorHandle:
                 email = data[3].strip() if len(data) > 3 else None
                 valid_thru = data[4].strip() if len(data) > 4 else None
 
-                tokens[token] = {'name': name,
-                                 'organization': organization,
-                                 'email': email,
-                                 'valid_thru': valid_thru,
-                                 'inactive': inactive}
+                tokens[token] = {
+                    'name': name,
+                    'organization': organization,
+                    'email': email,
+                    'valid_thru': valid_thru,
+                    'inactive': inactive
+                }
         return tokens
 
     def store_tokens(self, tokens):
@@ -105,12 +107,14 @@ class DoorHandle:
         if self.nfc_sock is not None:
             self.nfc_sock.send(b'open ' + user.encode() + b'\n')
         else:
-            raise RuntimeError("No connection to NFC socket. Cannot close door!")
+            self.logger.error("No connection to NFC socket. Cannot open door!")
+            raise RuntimeError("No connection to NFC socket. Cannot open door!")
 
     def close_door(self, user=''):
         if self.nfc_sock is not None:
             self.nfc_sock.send(b'close ' + user.encode() + b'\n')
         else:
+            self.logger.error("No connection to NFC socket. Cannot close door!")
             raise RuntimeError("No connection to NFC socket. Cannot close door!")
 
     def get_most_recent_token(self):