Yes: https://prosody.im/doc/turn

Further notes on implementing calling with XMPP: https://gist.github.com/iNPUTmice/a28c438d9bbf3f4a3d4c663ffaa224d9

…seems like things may have stagnated around group calling; for now probably need to consider something more video conferencing specific like jitsi or bigbluebutton.

Yeah, it’d be a live monitoring footprint limited to, say, wherever you have/bring a personal device plus maybe wherever there’s a wifi network it knows. But you’d be able to see where the tag was when it last pinged you, so you could return to that location to search for it and get a more accurate location fix.

The only case my example doesn’t cover is if a third party moves the tag away from your typical footprint and networks.

I don’t want an even higher level spyware device.

but I use […] AirTags regularly

Hmm…

It might be time to move on from the mass-surveillance-on-every-single-device style of object location tracking.
Are there localising/tracking bluetooth tags available which only connect to your network/devices?

A few years ago I was using “Call Recorder” which seemed good at the time, but right now hasn’t had any work done on it since 2023.

It was on f-droid, but the author threw a tantrum at f-droid about donations.

[…] shortly after the press conference, Reuters quoted a Hamas official as saying that the group had not received a “written Gaza peace plan” as yet.

One prominent example in Australia is via one of the two biggest nationwide supermarket chains, Coles: https://www.itnews.com.au/news/coles-to-run-palantir-analytics-suite-across-its-supermarkets-604698

Trollies are usually plastic-coated. If you’re gonna do this please burn it off first with a nice hot fire, then scrub off all the plastic residue before cooking food on it.

If it’s tin- or zinc-plated you run the risk of metal fume fever if you breathe the fumes, but once-off it’s probably not much of a hazard. Unless it’s cadmium plated (peculiar yellowish hue), in which case the fumes and residue are quite hazardous.

It’s also worth bringing a spanner to remove the castors – they’re usually decent quality and can be used for better purposes than a shopping trolley.

Not sure if any of this advice transfers with the programming analogy.