Yes, you can create an Apple Wallet pass using a QR code, and a QR code can help in two ways. The first is on the pass itself. Apple Wallet passes can show a QR code that staff scan at checkout or the door to find the customer, ticket or offer. The second is getting the pass onto phones. A QR code on a poster, a receipt or a screen can open the page where customers add the pass with a tap. The code doesn’t create the pass, though. The pass still has to be built and signed first. Make the code big enough to scan from where people stand, test it with your scanners and phones, and never put private customer details inside it.