QR Code Loyalty Cards: How Do They Work?

QR codes and stamp cards: a natural fit

A QR code loyalty card takes the familiar stamp card and rebuilds it on top of QR technology. Instead of pressing a rubber stamp onto paper, you scan a QR code and the stamp is added digitally. But what actually happens when you scan? Here is the whole process, step by step.

The basic principle

A QR code stamp card runs on two different QR codes:

The salon QR code — A fixed code displayed in your salon. Customers scan it to sign up and receive their digital stamp card.
The customer QR code — A unique code on the customer's digital stamp card (in Apple Wallet or Google Wallet). You scan it at each visit to add a stamp.

This two-sided setup is fast, secure and hard to game.

Step by step: the customer experience

First visit — signing up

On a customer's first visit, this is how it goes:

The customer opens the camera app on their phone
They scan the QR code displayed in your salon
A sign-up page opens in the browser
They enter their name (and optionally an email address and date of birth)
They receive a digital stamp card
One tap adds the card to Apple Wallet or Google Wallet

The whole sign-up takes less than 30 seconds, and there is no app to download.

Every visit after that — collecting a stamp

Return visits are simpler still:

The customer opens Apple Wallet or Google Wallet
They show the stamp card with its QR code
You (or a team member) scan the code with your phone or tablet
The stamp is added automatically
The wallet card updates immediately and the customer sees the new total

Customers do not need an internet connection to show their card. Scanning does require a connection on your side.

What happens under the hood

When you scan a customer's QR code, this is what runs behind the scenes:

The QR code holds a unique URL containing the card ID
Your phone opens that URL, which triggers an API call
The server verifies the card, runs fraud checks and writes the stamp to the database
A push notification is sent to the customer's wallet
Apple Wallet or Google Wallet fetches the updated card and displays it

All of it happens in one to two seconds.

Fraud prevention

The question we get most often is: "can a customer stamp their own card?" The answer is no, for three reasons:

A customer QR code can only be scanned by an authorised salon device
Stamps have a cooldown — two stamps cannot be added within a short window
The system automatically flags suspicious patterns, such as stamps arriving too quickly or outside your opening hours

Beepify also includes built-in fraud detection that alerts you to unusual behaviour so you can review it yourself.

Why salons prefer QR code stamp cards

Fast and contactless — The entire stamping process takes two seconds
No hardware needed — Your own phone is the scanner
Always to hand — The card lives in the wallet on the customer's phone
Updates itself — The card refreshes the moment you scan
Secure — Every stamp is verified and traceable

How to get started

Setting up a QR code stamp card for your salon is straightforward:

Create a free account
Build your first stamp card in the dashboard
Print the QR code and display it in your salon
Customers scan, sign up and start collecting stamps

Want the full setup walkthrough? Read our complete guide to creating a digital stamp card or the Apple Wallet stamp card guide.

Conclusion

The QR code loyalty card is a modern, secure and genuinely easy way to reward your customers. It pairs the proven stamp card idea with technology people already use every day. No apps, no hardware, no friction — just a QR code and a phone.

Try it yourself

Create your first QR code stamp card for free and scan it yourself within ten minutes. Try Beepify for free, or look at the pricing for each plan first.