Apple's stance on air tags is ridiculous. For one thing, you will only know if someone is criminally tracking you if you are an apple user. Android users have no luck.
Secondly if this is true and you stole a bag, all you need to find the air tag would be to hold an iphone close to it for a few minutes. So what's the point of it then?
While it won't provide "at rest" detection, Apple has released an app for Android devices.
- https://play.google.com/store/apps/details?id=com.apple.trac...
A much better alternative is the free and open source AirGuard app developed by the Technical University of Darmstadt. It automatically scans for AirTags, Tiles, and other Bluetooth tracking devices in the background. When AirGuard detects an AirTag, the user can immediately force the AirTag to emit a sound without having to wait.
- AirGuard: https://github.com/seemoo-lab/AirGuard