Have four Raspberry Pi Zero W's not being used, use at least one of them for this.
Tinkerer mentioned on Discord that you can use it with door sensors to trigger a scan for entrance/departure. Might also be able to remove bluetooth_tracker after this which adds significant startup time.
monitor.sh from andrewjfreyer seems to be very popular for presence detection.
Have four Raspberry Pi Zero W's not being used, use at least one of them for this.
Tinkerer mentioned on Discord that you can use it with door sensors to trigger a scan for entrance/departure. Might also be able to remove bluetooth_tracker after this which adds significant startup time.