Have I missed how these work? Other than misplacing them in your house and using your iPhone to direct you to the cushion they slipped under, (via short range bluetooth capability) as far as I can tell you can't really track them if you left an object with one of these attached in a restaurant, say. (If you could visit such a place these days.) My understanding is that it then depends on someone with another iPhone detecting them and notifying you that they found it. And then that leads to the issue of someone slipping one into your backpack and tracking you without you knowing it. As admirable as it was for Apple to build in safeguards to prevent that (sounds to alert you that you are attached to an Air Tag that isn't yours) I don't see why that was even necessary. If a stranger slips one into your backpack, as far as I can tell they can't really tell where you are once you leave their location far enough that bluetooth won't reach. Do I need to watch the keynote all over again to see what I missed?