Totally understand and agree. Just trying to clarify since some people don’t like to create online accounts if they can prevent it. (Kind of with them for the most part)

Since GPS systems would generally require an online account I wanted to specify that.

The no subscription thing is going to be a hard thing to do. There may be ones that don’t cost anything but you will still have to make an account with the company to use.

What I would do is search for a GPS tag system and then see if some have HA integrations.

There are some Samsung ones or even random 3rd party ones.

I don’t know enough about the to give you more help, good luck and hope you get what your looking for.