diff --git a/internet_usage/internet_usage_counter.py b/internet_usage/internet_usage_counter.py
new file mode 100644
index 0000000..3f59d4c
--- /dev/null
+++ b/internet_usage/internet_usage_counter.py
@@ -0,0 +1,35 @@
+"""
+Using dbus, listen for network interface changes and update the internet usage
+type='signal', interface='org.freedesktop.NetworkManager'
+It writes disconnect and connect times to a file
+"""
+from pydbus import SystemBus
+from gi.repository import GLib
+import datetime
+
+# The path to the file where the internet usage is stored.
+USAGE_FILE = "/home/inex/dev/Linux/internet_usage/usage.txt"
+
+session_bus = SystemBus()
+loop = GLib.MainLoop()
+
+def handle_state_change(state):
+    if state == 70:
+        # The network interface is connected.
+        # Write the current time to the file.
+        with open(USAGE_FILE, "a") as usage_file:
+            usage_file.write(f"{datetime.datetime.now()} CONNECT\n")
+
+    elif state == 50:
+        # The network interface is disconnected.
+        # Write the current time to the file.
+        with open(USAGE_FILE, "a") as usage_file:
+            usage_file.write(f"{datetime.datetime.now()} DISCONNECT\n")
+
+# Get the NetworkManager object.
+nm = session_bus.get("org.freedesktop.NetworkManager")
+
+nm.StateChanged.connect(handle_state_change)
+
+loop.run()
+