diff --git a/poll.py b/poll.py
new file mode 100644
index 00000000..a44e0d54
--- /dev/null
+++ b/poll.py
@@ -0,0 +1,13 @@
+import os
+
+
+# On an rpi, you get many addresses because it has lots of ports.
+# Run this address to find which port is connected to the gateway receiver
+input("Make sure device is removed, then press a key...")
+b4 = os.listdir("/dev")
+input("Now plug in the device, then hit any key...")
+after = os.listdir("/dev")
+print("Newly plugged in devices:\n")
+for line in after:
+    if line not in b4:
+        print(line)