...as well as those who don't own one are able to contribute in networks density and coverage.

How can this be realized?

Those who do not own a Bluetooth tracker only need to download the app and register their account. Through a feature called CrowdGPS, users are notified through a database that a lost item is nearby, in addition, it triangulates the location of their item and pinpoints them to where their lost property is.

Read more details here:
https://medium.com/mytracknet/mytracknet-the-ultimate-finder-of-all-physical-things-that-matter-to-you-the-most-861c89735bd0