Sounds cool. But given the new update to the FindMy app in iOS 15.2, it sounds like anyone who was close to you could just disable the tracking feature in your backpack, rendering it utterly useless. No thanks.
"With the iOS 15.2 beta that was released today, Apple has added enhancements to the Find Myapp. There's a new feature that's designed to let users scan for AirTags or Find My-enabled items that might be tracking them.
When opening the Find My app after installing the beta and going to the "Items" tab, there's an option for "Items That Can Track Me." Tapping on this allows users to search for nearby items that might be used to track their location.
When activated, the Unknown Items feature scans for anything that's nearby, and will let users know either way if there's a device that belongs to someone else nearby. If an item is detected, Apple offers instructions on how to disable the device so that it can no longer be used for tracking purposes."