Want to build and App.
App will have one interface for user(customer)
Other interface for retailer.
User can pre pay product from different retailer and once he goes to the retailer.
Retailer scans the barcode generated by Users App that should have the information of the User and product and from which retailer he has pre purchase it.
So probably the barcode that gets generated Everytime will have Users information retailer Information and product information and on the POS system of the retailer when they scan the barcode on the users app first of all the barcode should match with the retailer(as each retailer will have a unique number) if it doesn't match it should not process the transaction and if it matches then it collect the information about the amount that customer has on its app(so third part of barcode should have that information and it should get updated every time the transaction is accepted at POS).
There few more details which I ll convey once I start to get information on this project
128 freelancer đang chào giá trung bình $6935 cho công việc này
Hello I am mobile expert and have experienced a lot. This project is very interesting for me and perfect fit for my skills. I would like to discuss more details with you. Hope to meet you soon. Best Regards