diff --git a/authorized_cards.db b/authorized_cards.db
index e2b6073..d4720a3 100644
Binary files a/authorized_cards.db and b/authorized_cards.db differ
diff --git a/lock.py b/lock.py
new file mode 100644
index 0000000..79ea524
--- /dev/null
+++ b/lock.py
@@ -0,0 +1,25 @@
+import RPi.GPIO as GPIO
+import time
+
+GPIO.setmode(GPIO.BOARD)
+
+UNLOCK_PIN = 12
+LOCK_PIN = 11
+DELAY = 0.25
+
+GPIO.setup(UNLOCK_PIN, GPIO.OUT)
+GPIO.setup(LOCK_PIN, GPIO.OUT)
+
+GPIO.output(UNLOCK_PIN, GPIO.LOW)
+GPIO.output(LOCK_PIN, GPIO.LOW)
+
+def unlock():
+   GPIO.output(UNLOCK_PIN, GPIO.HIGH)
+   time.sleep(DELAY)
+   GPIO.output(UNLOCK_PIN, GPIO.LOW)
+ 
+def lock():
+   GPIO.output(LOCK_PIN, GPIO.HIGH)
+   time.sleep(DELAY)
+   GPIO.output(LOCK_PIN, GPIO.LOW)
+
diff --git a/main.py b/main.py
index 411d3b3..a0ec09b 100644
--- a/main.py
+++ b/main.py
@@ -7,6 +7,8 @@ import time
 import RPi.GPIO as GPIO
 from mfrc522 import SimpleMFRC522
 
+import lock
+
 class DoorLock():
     def __init__(self):
         # initialize card reader
@@ -43,7 +45,9 @@ class DoorLock():
 
     def unlock_door(self):
         # TODO send command to open door lock
+        # not implemented yet
         print("Unlocking door!\n\n")
+        lock.unlock()
 
     def release_the_kraken(self):
         # TODO notify that authentication failed
@@ -53,7 +57,7 @@ class DoorLock():
     def run_authorization(self):
         try:
             while True:
-                print("Hold card before reader..")
+                print("Hold card in front of reader..")
                 uid, data = self.reader.read()
 
                 print("card read: \n  uid = {}\ndata = {}\n".format(hex(uid), data))
@@ -69,17 +73,16 @@ class DoorLock():
                     self.release_the_kraken()
                 time.sleep(1.5)
         finally:
-            #GPIO.cleanup()
-            pass
+            GPIO.cleanup()
 
 
 if __name__ == "__main__":
     # create database with some users
-    # conn = setup_db()
-    # with conn:
-    #     create_user(conn, 'Simon', 4225799947, 0, str(datetime.utcnow()), str(datetime.utcnow()))
-    #     create_user(conn, 'Valentin', 154921302, 0, str(datetime.utcnow()), str(datetime.utcnow()))
-    #     users = select_all_users(conn)
+    conn = setup_db()
+    with conn:
+        create_user(conn, 'Simon', 141405954844, 0, str(datetime.utcnow()), str(datetime.utcnow()))
+        create_user(conn, 'Valentin', 154921302, 0, str(datetime.utcnow()), str(datetime.utcnow()))
+        users = select_all_users(conn)
 
     doors_of_durin = DoorLock()
 
@@ -87,4 +90,4 @@ if __name__ == "__main__":
     data  = 'Mellon!'
     #write_success = doors_of_durin.reader.write(data)
     doors_of_durin.run_authorization()
-    pass
\ No newline at end of file
+    pass