Why do you distinguish on premises from self hosting?
If the server is in a server farm or in my basement, I'm still hosting myself my services.
From Wikipedia:
Self-hosting is the practice of running and maintaining a website or service using a private web server, instead of using a service outside of someone's own control
A private web server is not defined by its location.
Well, if you use the CloudFlare WAF with login protection (available in the free tier), you're pretty much safe since the connection doesn't arrive at your server if you don't authenticate in CF first (with Gmail, Microsoft, OTP, etc.)
@foremanguy92_@lemmy.ml
or even pinging GPS satellites (because that leaves a log)
What logs does it leave and where? Satellite is a one way communication system, the devices just receive the satellites signal and calculate the position by themselves.
I've been sending my position to my server (with Traccar and GPSlogger) for years and I haven't had any problems with the battery.
It sends out the position every 5 seconds (excessive, I know!!! 🙈) and every 69 seconds when the battery is below 25% and only when it's not connected to a WiFi network.
But I'm with you about the new Google tracking system. I haven't had the chance to check: does it work like Apple and can track devices that have been turned off?
I'll have a look at it.
In the meanwhile, I've been using Tasker for that: if an SMS from curtains numbers is received with the text "POSITION", it will reply back with an OpenStreetMap link of the smartphone position.
Oh, I see, , "normal" tracker. I've asked because I thought it could be something different since the OP was asking to block Internet and not the tracker.
I've had a look at the app and it doesn't seems to me that it can block Internet access to other apps.
Even for PCs that come with Windows preinstalled, there's still the need to set it up at the first start (account, privacy and such), so I think that the option to enable Recall will be there.
To bypass this problem you can add your domain (with all the third level ones) to your router, pointing to your internal IP