Thanks for sharing the code. Perhaps someone (with more patience than I for Android/Kotlin development) can tweak it so that is can listen for knocking on a do

Thanks for sharing the code. Perhaps someone (with more patience than I for Android/Kotlin development) can tweak it so that is can listen for knocking on a door to trigger some sort of alert (email/txt/broadcast an intent). Triggering an intent would be very helpful as then it could then be acted upon by Tasker or Automagic4Android.