Air Tags - I don't get it

Can somebody explain to me what I’m missing here, because I don’t get it.

If you are within bluetooth range of something like a backpack you ought to be able to see it.

If you are out of range (e.g. your backpack was left on a train) it won’t help, right?

So what use is this?

2 posts were merged into an existing topic: Apple’s AirTag Promises to Help You Find Your Keys