automated billing system?

Cloud created by:

mark blake
5 August 2017


The idea is to create an automated supermarket billing system. My mobile App will deduct amount from customers bank account when they pick a product and scan its QR code but at the exit of my shop I will validate customer billing information which will be send through Wi-Fi from my App. The issue is How Am I supposed to corner the one who hasn't authenticated billing information or provided the incorrect billing info.

I didn't find the right solution from the Internet.



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