Use QR codes where customers pause
A QR code works on a counter, receipt, table or window. Put it where customers have a few seconds and pair it with a concrete benefit rather than a vague “Scan me”.
Use NFC to shorten the gesture
An NFC touchpoint opens the same registration page with one tap. It works especially well at the counter when staff can demonstrate the gesture and explain the reward in one sentence.
Combine both around one journey
Send every touchpoint to one short form with one clear reward. Test on iPhone and Android, then compare sign-ups by placement to keep the most effective materials.