$ python --version
Python 3.10.5
$ pip3 install kivy paho-mqtt lmfit filterpy
$ python .\app.py
https://github.com/jonl40/Capstone2020
https://www.researchgate.net/publication/306063099_Beacon_based_indoor_positioning_system_using_weighted_centroid_localization_approach
https://www.programiz.com/python-programming/modules
https://realpython.com/python-json/
http://www.steves-internet-guide.com/into-mqtt-python-client/
https://pypi.org/project/paho-mqtt/#installation