· 5 min
QR code loyalty cards are the technology behind most modern digital loyalty programmes. Here is how the whole system works from both sides of the counter.
A QR code loyalty card is not a physical card. It is a digital card that a customer accesses by scanning a QR code at your business. Once scanned, the card opens in their phone's browser and records the visit.
The two types of QR scan
1. Business QR code (customer scans)
You display a QR code at your counter. The customer scans it with their phone camera. This opens their loyalty card and records a visit. The simplest setup — no staff action required.
2. Customer QR code (you scan)
The customer has a unique QR code on their phone. Your staff scan it using your admin app. This gives more control because only a staff member can add stamps.
Loyenix uses a validated scan system, meaning each QR code can only be used once per session. This prevents customers from scanning multiple times in a single visit.
What happens when a reward is earned
When a customer reaches the stamp threshold, their card shows a 'reward ready' message. They present this to your staff, who confirm the redemption in the admin panel. The card resets and starts building again.
Do customers need an account?
With a browser-based system, customers can start collecting stamps without creating any account. Their progress is stored on their device. If they want to access the card across multiple devices, a simple email sign-up is usually required.
Is it secure?
Properly built systems include: time-limited QR codes that expire after each scan, session validation to prevent duplicate stamps, and admin-only redemption. No special hardware needed.
94% of smartphone users are comfortable scanning a QR code according to 2025 research
What if a customer's phone has no signal or a dead battery?
This comes up more often than business owners expect, especially in basements or areas with poor reception. Once a customer's card has loaded in their browser once, most systems cache enough of the page to display the card again without a fresh connection — the visit itself, though, still needs to sync to record the stamp, so staff should have a simple manual fallback (a name or phone number lookup in the admin panel) for the rare case where nothing loads at all.
Placing the QR code where it actually gets scanned
A QR code buried on a laminated sheet behind the till gets ignored. The codes that get scanned consistently are placed exactly where the customer's eyes already land during the transaction — printed directly on the receipt, on a small stand next to the card machine, or on the bill folder for restaurants. Position matters as much as the technology itself: the easiest scan is the one the customer does not have to look for.
Printed vs on-screen QR codes
A printed QR code at the till works for the business-scans-customer flow, since it never needs to change. For loyalty cards specifically, most setups print the business's QR code once and laminate it — it is static and does not need replacing unless the business itself changes its loyalty programme configuration.