diff --git a/lock.py b/lock.py
new file mode 100644
index 0000000..455787d
--- /dev/null
+++ b/lock.py
@@ -0,0 +1,27 @@
+from gpiozero import LED
+import shelve
+
+led = LED(17)
+
+def state(current : bool = None):
+    if current != None:
+        with shelve.open("Settings.conf") as settings:
+            settings["state"] = current
+    else:
+        with shelve.open("Settings.conf") as settings:
+            return settings["state"]
+
+
+def unlock():
+    led.on()
+    state(True)
+
+def lock():
+    led.off()
+    state(False)
+
+def switch():
+    if state():
+        lock()
+    else:
+        unlock()