This is a meta problem with a lot of account-based services. You have someone you share resources with, but not accounts. So they have a dog, they have an AirT

This is a meta problem with a lot of account-based services. You have someone you share resources with, but not accounts. So they have a dog, they have an AirTag on the dog, they'd both like to know about the tag, but they can't connect the tag to both accounts without making the accounts too intertwined. Like how I can't realistically share my Amazon Prime Video account with my wife because it is also my Amazon everything else account. Which is also an issue with Alexa/Echo. Which is kind of weird. Because this seems like a fairly simple graph. Users and service accounts are nodes and the edges describe which users have access to which service accounts. So Apple needs a user account for her, a user account for her husband, and then an AirTag service account they can both connect to. But instead, AirTags are a part of her husband's user account.