When you lost an item, you can declare lost in the Nut App. Then all the other Nut Apps will receive this notification, they will automatically scan the trackers around and try to find yours. As long as your Nut is found, the server will notify you the location where it is found. Then you can find your lost item there.
The above steps are automatically executed in the backstage and other Nut mini users will not be annoyed. All your privacies will be well protected.