This application is only POC concept. that we want to plot at one vendor place to collect feedback and suggestion from the customers.
1) How are the rewards earned in the application?
Ans:- Vendor will create a card with fix number of stamp i.e. 10 with unique QR code. customer will login as a customer into app and scan the vendor QR Code to add the card into customer application. when customer purchase the items then vendor will scan the QR Code of customer and give them stamps and once all stamp collected then vendor will give rewards in person to customer and card will reset. i.e. customer complete 10 stamps vendor will assign 1 reward to that customer.

2) How do you redeem the rewards once you earn them in the app?
Ans:- vendor will scan the QR Code of customer card and reset the reward count and give rewards item in person to the customer.

3) Where do the rewards themselves come from?
Ans:- Once customer collect all the stamps then vendor will give the one reward to customer by scanning the QR Code of the customer card.