This can be 3D Printed into "Coins". They can allow the purchase of specific Prints, give a number of Credits or give a discount code. Each QR must have a maximum ammount of uses and requires an account. An Admin can scan the discount code and apply it manually to specific orders.
In any case, the website allows for a custom created link and the QR and also offers a web scanner that checks it out.
This can be 3D Printed into "Coins". They can allow the purchase of specific Prints, give a number of Credits or give a discount code. Each QR must have a maximum ammount of uses and requires an account. An Admin can scan the discount code and apply it manually to specific orders.
In any case, the website allows for a custom created link and the QR and also offers a web scanner that checks it out.