TrackR was a commercial key finder that assisted in the tracking of lost belongings and devices.

[1] Trackr was produced by the company Phone Halo[2] and was inspired by the founders' losing their keys on a beach during a surfing trip.

[4] In Winter 2018, TrackR rebranded itself to Adero, as part of changing its focus to other uses for its tracking technology, taking TrackR beyond the Bluetooth fobs that had been the core of its service.

It communicates its current location via Bluetooth 4.0, to an Android 4.4+ or iOS 8.0+ mobile device on which the TrackR app is installed and running.

[3] As of August 2021, the official website stated that the manufacturer has discontinued App support for both Apple and Android devices.