How a QR Code Loyalty Card Actually Works

The figures and scenarios in this article are illustrative: adapt them to your margins and your own data. They are not EasyFid customer results. See how to measure your results.

A quick sign-up at the register, a phone held up for a second, and a loyalty card appearing in the customer's Wallet within seconds: the principle sounds simple, but many shop owners still hesitate to switch to a QR code loyalty card because they can't quite picture what happens "under the hood." Who creates the card? Where is the data stored? What does the customer actually see on their phone?

This article breaks down how a QR code loyalty card works from end to end, from signing up a customer at checkout to the points balance updating in Apple Wallet or Google Wallet, so you understand exactly how the mechanics work before setting it up in your shop.

The principle in one sentence: you register the customer, their card does the rest

A QR code loyalty card relies on two distinct moments, which shouldn't be confused:

• Creating the card: the shop owner enters the customer in the EasyFid app (first name and, optionally, a phone number or email), which generates a unique card for that person and a one-time link or QR code so they can add it to their own Wallet.
• Using the card: once added, the customer's card carries its own QR code, shown on their phone. That's the one the shop owner scans at every future visit to credit points.

This distinction is the key to understanding the whole mechanism: the shop owner always initiates the sign-up from the app, and from that point on, the customer's card — not a code posted at the register — is what gets scanned at every visit.

Step 1: the shop owner creates the customer's card at checkout

At the counter, the shop owner opens the EasyFid app and adds the customer with a first name and, optionally, a phone number or email address. This takes just a few seconds and requires no form for the customer to fill in themselves.

Once the profile is created, the app generates the customer's card and shows a link or QR code the customer can scan or receive to add it to Apple Wallet or Google Wallet with a single tap. From that moment on, the card lives on the customer's phone, ready to be scanned at their next visit.

Step 2: every purchase credits points with a scan

Once the card has been added to their Wallet, the customer only has one gesture to make at every visit: open their Wallet and show the QR code on their card. The shop owner scans it from the EasyFid app, using the camera on their phone or tablet.

This scan triggers the credit: a number of points proportional to the amount spent, or one more visit toward a reward (the 10th coffee free, for example). The operation is instant and requires no special terminal, no plastic card, and no connection to a cash register — a smartphone or tablet is enough on the shop owner's side.

• Amount-based scale: 1 point per euro spent, with a reward threshold set by the shop owner.
• Visit-based scale: a virtual stamp at every visit, regardless of the amount, up to the reward.
• History: every scan feeds a history the shop owner can consult in the app, useful for identifying the most loyal customers.

Step 3: the card lives in the Wallet, updated live

This is where the QR code card really sets itself apart from a paper stamp card. Once added to Apple Wallet or Google Wallet, the card isn't a static image: it displays the points balance live, with no need for the customer to reopen an app or refresh anything. The moment the shop owner validates a scan at checkout, the balance updates automatically on the customer's screen, wherever they are.

EasyFid sends no notification or message: the customer simply finds the balance already up to date the next time they open their Wallet, one tap away from their home screen. Since it's the phone's native Wallet that hosts the card, no third-party app is required on the customer's side — one of the founding principles behind a solution like EasyFid, designed to remove any friction for the customer.

Why this works better than a paper stamp card

The cardboard stamp card has a structural weakness: it gets lost, forgotten in another jacket, crumpled at the bottom of a bag. Every lost card wipes out the customer's history and breaks the loyalty mechanic mid-course. The QR code card, on the other hand, lives in an object the customer always has on them — their phone — and can't technically go missing as long as the device is there.

The second advantage is invisible to the customer but decisive for the shop owner: every scan feeds a history you can consult. Visit frequency, points earned, number of rewards handed out — indicators a paper booklet will never provide.

Setting up a QR code loyalty card in your shop

Technically, a shop owner only needs one thing: a smartphone or tablet running the EasyFid app, used both to create customer cards and to scan them at every visit. No special payment terminal, no hardware subscription, and no code to print or display.

• Create the program: define the scale (points per euro or a visit-count system) and the reward threshold.
• Register each new customer: a first name and, optionally, a phone number or email, entered in the app in a few seconds at checkout.
• Scan at every visit: from the app, in a few seconds, without interrupting service.

To go further on building a complete program — scale, rewards, follow-up frequency — see our guide to setting up a merchant loyalty program.

Frequently asked questions about QR code loyalty cards