KhadashPay is my attempt to build a payment system from scratch.
KhadashPay Firebase Edition also incorporates the capabilities of https://sourceforge.net/projects/midbar-firebase-edition/
The official GitHub repository: https://github.com/Northstrix/KhadashPay-Firebase-Edition
You can find the tutorial on https://www.instructables.com/DIY-IoT-Payment-System-With-Google-Firebase/
Version of KhadashPay with local storage of data is available on https://sourceforge.net/projects...