You can use QR code as coupon.
A QR code coupon is a special type of QR code that you can use in your app to give your customers special discounts or rewards. The QR code coupon is only scannable from your app.
Your app will track the number of times a user scans the coupon, and unlock after a specified number of scans to give the user a reward. You can also require users to register and login to your app to be able to use the coupon. A QR code coupon is a great way to reward customer loyalty.
Read More in our User Manual here