To generate histograms and time plots we used the library from: PhilJay, March 20th, 2019, Apache 2.0, https://github.com/PhilJay/MPAndroidChart
To calculate statistics such as standard deviation and quartiles, we used the Apache Commons Math library: Apache Project, March 17th, 2016, Apache 2.0, https://mvnrepository.com/artifact/org.apache.commons/commons-math3/3.6.1
To generate qr codes we used the library from: AndroidMad / Mushtaq M A, July 26th, 2020, The MIT License, https://github.com/androidmads/QRGenerator
To scan qr codes and barcodes we used the library from: Yuriy Budiyev, December 24th, 2020, The MIT License, https://github.com/yuriy-budiyev/code-scanner
To save images to the device we used code from: Ketul Patel, July 16th, 2020, Youtube Standard License, https://www.youtube.com/watch?v=FcCtT1C7NGI&ab_channel=KetulPatel
To get location from a device we used code from: Coding with Dev, May 25th, 2020, Youtube Standard License, https://www.youtube.com/watch?v=qY-xFxZ7HKY
To show a map we used the library from: osmdroid, January 30th, 2021, Apache 2.0, https://github.com/osmdroid/osmdroid