A trackr is a Bluetooth tracker
Whether you're neat or sloppy, we all get rid of something. With the Stickr TrackR or TrackR Bravo you have a Bluetooth bunch finder, purse finder or whatever. With the app on IOS or Android you can see where the TrackR is, or maybe you have your keys but you lost your phone, then you can leave your phone with the TrackR. If a trackr is out of reach of the app, the last known location will be shown. If it still fails, other trackers can help users through Crowd Tracking. If you want to know more or buy a trackr, go to the website of TrackR. Https://www.youtube.com/watch?v=SZNaVAACTwI