This project uses the same approach that I took for my ESP32 based indoor location tracking system (by tracking BLE signal strength). But this project came up with an actual user interface – NICE!
![](https://www.schrankmonster.de/wp-content/uploads/2019/01/Bildschirmfoto-zu-2019-01-23-12-47-31-600x338.png)
(https://github.com/jarkko-hautakorpi/iBeacon-indoor-positioning-demo)