monitor TL;DR: Bluetooth-based passive presence detection of beacons, cell phones, and any other bluetooth device. The system is useful for mqtt-based home automation.  Script here.  Read the README here.  Comparing presence.sh and monitor.sh Thank you to everyone for helping test and provide input in the original thread. I am very pleased to announce a major major update that many of you already know about… monitor.sh as an alternative to, and in many ways a dramatic improvement over, presence....