Using Samsung Modes and Routines for Presence Sensing

I saw an interesting post, below.
A lot of it is Greek to me though.
I'm not even clear on how/what a webhook is.
Any illuminating info would help.

  1. Get an automation app for your phone (there's one called Automate for Android).
  2. Setup a device in Maker API to toggle.
  3. Add the device as a rule trigger to do whatever you want to happen.
  4. Setup an automation in the app on your phone to hit the device in Maker whenever you connect/disconnect from your home WiFi (This would be the "webhook" part).