Poster POS is one of the most popular point-of-sale systems for cafes, bakeries, salons, and small restaurants in Central and Eastern Europe. It is fast, mobile-friendly, and affordable. But there is one thing it does not do natively: bring customers back.
Poster handles the receipt, the kitchen ticket, the stock count, and the financial report. It does not have a built-in loyalty program with wallet cards, vouchers, push reminders, or birthday gifts. If you want any of that, you need to add a layer on top of Poster. This guide covers three realistic options and explains why most cafes pick the wallet-card approach.
Does Poster POS have a built-in loyalty program?
Short answer: no, not in the way most cafes expect.
Poster has discount logic, promo codes, and a Certificate payment method, but it does not include the loyalty layer most operators actually need:
- a wallet loyalty card that the customer keeps on their phone;
- a voucher engine with an issued to redeemed lifecycle;
- push, email, or messenger campaigns triggered by customer behavior;
- birthday automation without manual work;
- delivery insert QR flows that convert anonymous marketplace orders.
Loyalty is a separate problem from running a checkout, and Poster intentionally stays focused on the checkout.
Option 1. Paper punch cards
This is the cheapest option. Print a stack of paper cards, stamp them at the counter, and give a free coffee on the tenth visit. It can work for a very small cafe that just wants a starting point.
The tradeoff is brutal: customers lose the card, you have no data on who came back, you cannot message anyone, and the program disappears the moment the customer cleans out their wallet. There is no birthday logic, no win-back, and no clean way to see whether the team is actually offering the program.
Option 2. A standalone branded loyalty app
Some cafes build or buy a branded mobile app with stamps, points, and rewards. This can work for a larger chain with budget and an internal product team.
For an independent venue, the downside is usually too heavy: the customer has to download one more app, register, and remember the password. Onboarding loses a large share of potential members right at install. Then the app needs ongoing iOS and Android maintenance. The total cost of ownership is rarely justified.
Option 3. Digital wallet stamp cards on top of Poster
This is the approach 7stamp takes. Cards live in Apple Wallet and Google Wallet, which are already on the customer's phone. The customer joins in about 15 seconds by scanning a QR code printed at the bottom of the Poster receipt. Staff does nothing new. Poster keeps working the same way it already does.
- Install 7stamp from the Poster marketplace.
- Choose one of two modes: cashier scan at checkout or QR printed on every receipt.
- Customers scan, save, and start collecting stamps from the next visit.
The card sits next to Apple Pay and Google Pay, so customers see it in everyday life. There is no app to delete, no password to forget, and no separate login.
| Option | What is good about it | Where it breaks |
|---|---|---|
| Paper punch card | Cheap and simple to launch | No customer data, no messaging, easy to lose |
| Standalone loyalty app | Maximum control and custom UX | High cost, weak onboarding, ongoing maintenance |
| Wallet card on top of Poster | Fast onboarding, no app, low operational load | Needs a loyalty layer outside the POS |
What about vouchers? Poster does not have them.
That is correct. Poster as a POS does not include a true voucher system, only discounts and promo codes applied at checkout.
7stamp adds a full voucher engine on top of Poster. Vouchers have a lifecycle of issued -> active -> redeemed -> expired, can be earned by collecting stamps or issued manually, work in campaigns, and cannot be used twice, even from a screenshot.
At the Poster checkout, vouchers redeem through one of three standard methods: a special zero-price promo item, a manual discount, or a Certificate payment method. You choose the accounting path that fits the venue.
What about delivery orders through Glovo, Bolt Food, or Wolt?
Aggregators bring orders, but they keep the customer relationship and take 25 to 35 percent commission. Poster can help with order intake, but it does not convert anonymous aggregator orders into your direct customer base.
7stamp Delivery Inserts solve that gap. Print small cards with unique QR codes, drop one into every delivery bag, and each scan instantly issues a loyalty card with welcome stamps. The customer is now inside your base, so you can send a wallet push, a birthday gift, or a win-back voucher without going back through the aggregator.
Read the full delivery aggregator playbook
What about birthdays, win-back, and reminders?
Poster does not send lifecycle messages to customers because the relationship ends on the receipt.
7stamp adds three practical channels on top:
- Wallet push for short notifications on the saved wallet card;
- Email for longer campaigns with images, buttons, and vouchers;
- Messengers through WhatsApp, Telegram, and Viber integrations.
Birthday rewards can be configured once and run automatically. Win-back rules such as no visit in 30 days can also run in the background. The message is not just come back. It becomes come back, here is a concrete reason.
How much does it cost?
7stamp has a Free Forever plan with up to 100 card operations per month and one staff seat, which is usually enough for a small cafe testing the loyalty loop. After that, pricing starts at EUR 29 per month or EUR 290 per year per location.
The Poster integration itself is free to install and use. There are no per-transaction fees.
How to install in under 15 minutes
- Open joinposter.com/applications/7stamp and click Try, then Connect.
- Open admin.7stamp.com and create an API key in Stamp Cards -> API & Integrations.
- In Poster, go to Functions -> Applications -> 7Stamp and paste the key.
- Choose your stamping mode: scan card at checkout or print QR on receipt.
- Done.
Full step-by-step with screenshots
Other Poster integrations worth knowing about
Poster has a marketplace of third-party applications across accounting, online ordering, reservations, and inventory. 7stamp is the loyalty layer. It does not try to replace those tools, and it works alongside whatever else is already installed.
Conclusion
Adding loyalty to Poster POS does not require a custom app or a developer. The cheapest credible setup is a paper punch card. The most cost-effective day-to-day setup is a wallet stamp card that joins by QR and runs quietly in the background. Poster keeps doing what it does best, and the loyalty layer sits on top.
