What's the difference between a Find My tag and an RF key finder?

Find My / SmartThings tags use crowd-sourced phone networks to show a tag's last-seen location on a map, which is useful for lost luggage or items left behind. RF beepers, by contrast, just make a loud noise when you press a remote button and only work within roughly 100–130 feet, but reviewers in privacy- and home-automation-focused communities like them precisely because there's no app, account, or tracking network involved.