For The Belgian I created a Android application that should read data from an other running application.
More specifically to generate analytical data for passangers and their temperature (COVID-19 related).

This was possible thanks to the fact that the devices for this application were rooted, and I could use root commands to read data from the needed application.

Data is polled every X minutes and an alert triggered (and send by SMTP/mail) when certain condition are met.

I only did the 'Polling/analytics application', the application for registering temperatures was not developed by myself.