I have a purpose for it.
If using the orders are for work orders, when the cutomer comes in to pick up the bike, we need to be able to scan the receipt and the order pull up on the ipad.
We're shipping QR codes on receipts soon. You'll be able to default to QR codes added to receipts, and then when presented with the receipt you will be able to scan it with the iPad's front-facing camera. We're testing it now.
(retail product @ shopify)