A digital Kundenkarte in Apple Wallet or Google Wallet is the natural evolution of the Stempelkarte -- and particularly well-suited to Germany because it stores no personal data.
The Stempelkarte is deeply embedded in German commerce. Nearly every Backerei, cafe, and Friseur has handed out paper cards at some point. The problem: cards get lost, forgotten, or buried at the back of a Portemonnaie. And they can't send a notification when a regular hasn't been in for three weeks.
The digital Kundenkarte -- delivered as a wallet pass in Apple Wallet or Google Wallet -- solves exactly these problems. The card is always with the customer because it lives on their smartphone. Progress is always visible. And when needed, a push notification can land directly on the Sperrbildschirm (lock screen).
Key Takeaways
- A digital Kundenkarte in Apple Wallet or Google Wallet requires no app download from the customer
- DSGVO-compliant by design: no personal data stored on the merchant's server
- Compatible with SumUp and all German Kassensysteme via QR code scan
- From 29 EUR/month -- often cheaper than the monthly print costs of a paper Stempelkarte
DSGVO and loyalty programs in Germany
How a Digital Kundenkarte Works
The mechanics are the same in every market, but worth stating clearly for German business owners evaluating digital loyalty for the first time:
Step 1 -- Customer scans the QR code: Your QR code sits on the counter tent card, table, or takeaway packaging. The customer points their phone camera at it. A prompt appears to "Add to Wallet." They tap it. The loyalty card appears in Apple Wallet (iPhone) or Google Wallet (Android) -- no app to download.
Step 2 -- Staff scan at the next visit: Your staff open the free LoyaltyPass merchant app on any smartphone. They scan the QR code on the customer's loyalty card. They add a stamp or points. Total time: five seconds.
Step 3 -- Progress visible in Wallet: The customer's stamp count updates in Apple Wallet or Google Wallet and is visible from the lock screen. "7/9 Stempel" is a passive, ongoing reminder without any active push notification required.
Step 4 -- Reward redeemed automatically: When the threshold is reached -- 9 stamps, for example -- the card automatically shows "Pramie bereit" (reward ready) and your staff tap "Einlosen" in the merchant app to redeem it.
Which German Businesses Benefit Most
Wallet-pass loyalty works across a wide range of German small businesses. The highest-return use cases are those with high visit frequency and consistent transaction sizes:
Cafes and Kaffeebars -- daily or weekly visits, 3-8 EUR per transaction. Full guide for cafes in Germany
Backereien and Konditoreien -- highest visit frequency in the German F&B sector, 3-12 EUR per visit, regulars are disproportionately valuable.
Restaurants and Bistros -- weekly or bi-weekly visits, 15-40 EUR per visit.
Friseursalons and Barbershops -- every 3-6 weeks, 25-100 EUR per visit, regulars are extremely valuable.
Boutique-Einzelhandel -- monthly visits, 30-150 EUR per transaction.
Fitnessstudios and Yoga studios -- multiple visits per week, members can be rewarded for extra classes or referrals.
Push Notifications: The Decisive Difference
The single most impactful feature of a digital loyalty card versus a paper Stempelkarte is push notifications. For German business owners who haven't used them before, it's worth explaining exactly what they do.
A push notification is a message sent directly to the customer's smartphone lock screen -- no email open rate, no social media algorithm, no hoping the customer happens to be scrolling Instagram. When you send a push notification in LoyaltyPass, every active cardholder receives it within seconds.
Practical examples for German businesses:
- Slow Tuesday morning: "Double stamps until 10am -- come in today!" -- direct to every cardholder's lock screen
- Regular not seen in 3 weeks: "We miss you -- your next coffee earns double stamps" -- automated re-engagement
- Weihnachtsmarkt season: "Gluhwein is ready -- regulars get a free Zimtstern today" -- seasonal campaign
- New menu item: "New Herbstkarte is live -- come in first and tell us what you think" -- product launch
None of this is possible with paper.
DSGVO in Two Sentences
Wallet-pass loyalty cards store no personal data on your server. The LoyaltyPass dashboard shows only anonymised statistics. For most German small businesses, this removes the typical DSGVO obligations associated with loyalty programs.
For a detailed breakdown: DSGVO and loyalty programs in Germany
Get Started in 8 Minutes
Step 1 (3 minutes): Create a LoyaltyPass account. Enter your business name, logo, and brand colours.
Step 2 (2 minutes): Choose your reward structure. For most German businesses: stamp card, 9 stamps = 1 free item.
Step 3 (1 minute): Download your QR code and print it as a counter tent card.
Step 4 (2 minutes): Install the free LoyaltyPass merchant app on your staff's smartphone.
Step 5: Brief your team: "When a customer pays, ask if they'd like to collect stamps. Just hold this app up to the customer's card."
Total time to launch: under eight minutes. You can go live with your first Fruhstuck customers today.
Start Your Digital Kundenkarte
LoyaltyPass is designed for German small businesses. EUR pricing (from 29 EUR/month), DSGVO-compliant by design, compatible with SumUp and all German Kassensysteme, Apple Wallet and Google Wallet support with no app download required for customers.
Start your free trial -- no credit card required
Frequently Asked Questions
What is a digital Kundenkarte?
A digital Kundenkarte is the electronic version of a physical Stempelkarte. Customers add it to Apple Wallet or Google Wallet by scanning a QR code. Staff add stamps or points at each visit using a free app. Progress is always visible in the customer's Wallet.
How do you set up a digital Kundenkarte in Germany?
In about eight minutes: create a LoyaltyPass account, choose your reward structure, print the QR code, install the merchant app. No POS update, no developer, no IT costs.
Is a digital Kundenkarte DSGVO-compliant?
Yes. Wallet-pass loyalty cards are DSGVO-compliant by design because the card lives on the customer's device -- not on the merchant's server. No personal data is stored.
Does a digital Kundenkarte work with SumUp?
Yes. The wallet card scan happens separately from the payment via a free app. No SumUp update or configuration required.
What does a digital Kundenkarte cost for a German small business?
From 29 EUR/month for one location -- often cheaper than the monthly print costs of a paper Stempelkarte, with push notifications and a customer analytics dashboard included.
The Stempelkarte is a German tradition. The digital Kundenkarte is its natural evolution -- DSGVO-compliant, always with the customer, with push notifications for exactly the right moment.
