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I stumbled onto Traccar via Home Assistant, which offers Traccar as a plugin. Ultimately I wanted a boolean sensor for whether I'm at home or not, and Traccar (as installed by the HA plugin) provided that to HA without configuration.

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Thank you for the tip! Hass user here too. I was reluctant to use GPS based detection but traccar seems like good private solution. I still have to check whether I must spin my own instance or if the traccar server is running automatically on (my) Hass server.

I haven't inspected deeply but all pointers indicate Hassio (I'm running it all on a Raspberry Pi 3 B+) installes Traccar locally.

I'm also looking into client-side geofencing, e.g. an app that reports an event to HA when a fence is crossed, compare to Traccar collecting all the locations and inferring the crossings. My goal is tiered presence detection.

How about Owntracks. It can do geofencing

Isn't owntracks an option? Self-hosted and has regions.

It comes in as Json and just parts the regions array

Parse...

I did not see Owntracks in the plugin repository. Traccar was one click to install.

Owntracks is a message on mqtt, it would suprise me if there was no support for mqtt.

It does work with MQTT. What it doesn't do is install Owntracks as a HA plugin.

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