I am trying to come up with a way for detecting arrival/departures from the house.  I have looked into CAO tags and wifi connections and have been trying out Alexa arrival routine.  The problem with alexa is it seems to only work about 25% of the time, the rest of the time it either never triggers or triggers several minutes after arriving.   Wifi too, I believe would be to sporadic from what I have read and I am not sure I am savvy enough to actually pull that off.  CAO tags seem at the moment to be the best option, but then again I have to rely on everyone actually having it with them, which I feel would be a feat in itself.

All that being said, everyone carries there phone..  So I have been searching for some sort of bluetooth system that is not overly expensive and not overly complicated to accomplish the goal.  The goal is simply to trigger programs upon certain persons arrival/departure and know if everyone is vacated.  I have read some articles about Raspi projects and the like, but was wondering if anyone knows of/is using a bluetooth arrival/departure type device or has any additional recommendations that would helpful.

Thanks

Tom

If you're running V5 firmware and have a RPi already, I'd recommend using polyglot with the presence-poly. It works very well for me and uses both bluetooth & wifi connections to determine presence.

https://github.com/dmoralesdev/Presence-Poly

I've recently started using presence poly myself for managing my alerts and it has been on point every time. It actually works much better than geo-fencing did

That sounds spot on.  Unfortunately I do not have a pi and I dont see it in poly cloud.  I will probably wait until I have the polisy pro in hand, hopefully it will have it built in.  Thanks to both of you for the rec.

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I ended up giving up on geofencing and use Automagic for WiFi presence detection and it's working fine, but will look at presence poly when I get my Polisy.