[TimButterfield]

Apple could mitigate this risk to some extent. If some tracker that is not mine remains in proximity to me while I move around (or my iDevice does), it should warn me and then help me to find and identify/eliminate that tracker. If that tracker belongs to a member of my family or immediate circle, I could mark that tracker as accepted and not a risk. It would also be good to know who that tracker belongs to so I could be aware of the risk coming from that person.

[varenc]

That set of features literally already exists. An iDevice will very aggressively warn your about trackers that don’t belong to you following you around. But of course only on iDevices. Though there’s no way to share an AirTag with someone else. (That might open up the risk that a stalker could “share” an AirTag with their victim in a way they’re not aware of for the purpose of silencing those alerts)