Airtags and multiple users?
We have a need to track several items - mainly a fleet of vehicle keys for our family. But as the family part implies, there are multiple users of these vehicles. So I have questions.
1) I know you need iOS above 14.x to activate the tags. But once activated, will older devices show them in FindMy still? EG I have an iPad Air 1 with iOS 12. Can it be used to find Airtags even though it can't register them? I'm aware UWB hardware may not be present in the older models. Ignore that feature in regards to this question.
2) Similar to the above, I see Airtags can be shared across a "family" since iOS 17... Once enabled, does this also work on older iOS devices, or are shared device locations only shown on iOS 17's version of FindMy? EG could an iOS 15 device show shared Airtags after the sharing is set up on the account in 17 or 18?
3) I've seen reports that tags start beeping when non-owners are moving with them. Some suggest this is automatic and intentional to advise people they might be being tracked. Is this the case? Or is the beeping initiated when the user (owner or not) presses a prompt on their phone (such as the tracking warning or the lost item warning)?
4) Related to the above - if the "owner" of the tags leaves 7 of them hanging on the key hooks at home when they take the 8th one off to drive the car it belongs with, is there going to be a bunch of warnings? I noticed my girlfriend's phone nagging her recently about her watch being left somewhere (intentionally)... Is it going to do this with airtags? Is it optional for things expected to be left behind?
5) Is there a better way to achieve this that anyone else can think of? I'm leaning towards Airtags over something like Tile because of the greater coverage in instances where the keys are left somewhere away from home (like if I leave one at work or we drop one down the couch at church)... But would I be skipping a lot of hassles with iOS versions and sharing if I just got a different set of devices and ignore the limited coverage?