The purpose of using this app is to verify the authenticity of QR codes. We provide various services to our customers and the way it works is to issue QR codes. Suppose a user wants to save up cashback after having a nice meal at a restaurant. All he needs to do is to show QR code of his own then the staff will scan the QR with this app and the server will check the validity of the QR code. Not only this, we provide all history page where users can see all the transactions been made using this app.