NYPD asks people to put Apple AirTags in their cars to help find stolen vehicles
cnbc.com
cnbc.com
It would make so much sense for this to be part of family sharing (and would actually get us to set it up, if it worked that way). At the very least, there should be a way for you to tell your iPhone to ignore a particular airtag that's following you, since it belongs to your kid/spouse/car/etc. (You'd want to be able to undo this selection later, if you broke up with your spouse and didn't want them to be able to surreptitiously track you with an old airtag.)