Welcome to the seller community, @Bdecaso!

Yes, you can certainly generate a unique ticket number with a payment though we do not currently offer the ability to include a QR code on each individual receipt. I'd like to share some more information on this request with our Point of Sale team—can you reply here with some details on how the QR could would be helpful and how you would like to use it with your business?

For more on setting up order tickets, have a look here: Print Order Tickets.

Hope this helps. Please let me know if you have any further questions.