i don't mean Tile and such devices, i mean the ones where you can put a SIM in it and have them text GPS co-ords. something like https://www.onlinespyshop.co.uk/sms-tiny-tracker/

i know that AirTags are way more accessible, but i just mean these kinds of tools have been available to adversaries for a while.

(i also don't really know how well these trackers really work.)