Merchants do not leave the terminal that holds their customers
How do payment providers increase merchant retention? Let merchants build their customer database on the card machines you supply. Every profile created makes switching harder: a merchant who leaves the terminal walks away from their own customer relationships. More than 95,000 customer profiles have been created on Zeal terminals so far.
Integrates with all card machines. Trusted by industry leaders.
The database is the switching cost
With Zeal on your terminals, every payment builds the merchant's customer database: who is new, who is returning, what they spend. That database lives on the terminal you supply, so leaving you means starting again from zero.
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What merchants build on your machines
Customer profiles, loyalty balances and campaign history, all created at the moment of payment and growing with every transaction. The longer a merchant runs Zeal, the more their business depends on what your terminal holds.
Retention by value, not lock-in
There is no contractual trick here. Merchants stay because the terminal earns its place on the counter: it identifies their customers, powers their loyalty programme and grows their repeat business. That is retention a rival processing rate cannot undo.
Data gravity: the switching cost merchants build themselves
Payment providers increase merchant retention by helping merchants build an asset they cannot take to a competitor: a customer database created at the terminal. Each card presented becomes, with the customer's consent, a profile — visit frequency, spend, loyalty balances — that grows with every transaction. The longer a merchant trades, the more their dashboard knows, and the more it would cost to start again from zero on someone else's terminal. That accumulating knowledge is data gravity, and it holds the merchant to the provider who made it possible.
What does a merchant actually own after a year on your terminals?
A customer database built from real transactions. The dashboard shows how many customers came through in the last 30 days, how many were new against returning, which were loyalty members against guests, and what each group spent. Most merchants have never seen these numbers for their own shop — footfall, repeat rates and spend by customer type have historically belonged to e-commerce. When the answers come from the card machine on the counter, every visit deepens the picture, and the picture belongs to the relationship between the merchant, their customers and the terminal you supplied.
What does a single customer profile look like?
Each customer resolves into a profile the merchant recognises: lifetime value, visit rhythm, average spend, loyalty points and vouchers, plus the merchant's own tags and notes. When the card is presented, Zeal identifies the customer before the transaction and the payment processes exactly as it does today — no extra step at the till, no app required, and consent captured from the customer first. A regular stops being an anonymous £13.55 on a settlement report and becomes someone the merchant can name, thank and bring back.
Why does this database keep merchants where they are?
Because walking away means starting again. A merchant who leaves your terminals leaves behind the recognition — who is new, who is returning, who is drifting away — along with loyalty balances their customers care about and a year of accumulated understanding of their own trade. A rival can discount their headline rate; they cannot hand over the merchant's customer database. The switching cost is not contractual, it is accumulated — which is why it holds.
What is data gravity in payments?
Data gravity is the pull that accumulated data exerts: the more of it a business builds in one place, the harder that place is to leave. In payments, it is the customer database a merchant creates through their card machine — profiles, visit histories, loyalty balances — that makes the terminal, and the provider behind it, difficult to replace. Websites have cookies; card machines have Zeal, identifying customers with their consent at the moment the card is presented. Gravity built this way favours the provider who installed it first.
Where data gravity builds slowly
Data gravity accrues; it does not arrive. A newly installed merchant has a thin database for the first weeks, so the retention effect strengthens over months rather than days. It is also strongest where merchants engage: a dashboard nobody opens builds fewer habits than one worked into the weekly routine, which is why activation matters as much as installation. And gravity is a counterweight, not a lock — a provider with poor service or uncompetitive pricing can still lose merchants who have plenty to lose. It tilts the decision; it does not remove it.
Questions providers ask about merchant retention
How does a card machine build a customer database?
When a card is presented, Zeal identifies the customer — with their consent — before the transaction, then the payment processes exactly as it does today: no recertification, no second authorisation and no added scheme fees. Each visit updates the customer's profile with spend, frequency and loyalty activity.
Do customers need an app or email address to be recognised?
No. The card itself is enough to recognise a returning customer at the terminal. Apps, digital receipts and sign-ups can enrich a profile, but recognition works from the first tap.
What does a merchant lose by switching payment providers?
The accumulated picture of their own trade: who is new against returning, each regular's visit rhythm and value, and the loyalty balances customers hold. Rebuilding that on another provider's hardware starts from zero — which is exactly why the database retains.
Does this work for customers who never join the loyalty programme?
Yes. Guests are still recognised as new or returning, so the merchant's footfall and repeat-rate picture covers everyone. Members additionally carry points, vouchers and richer history.
How is this different from a standalone loyalty app?
It lives inside the payment. There is no separate scan or sign-in at the till, so participation does not depend on the customer remembering an app — and the resulting database sits with the terminal your merchants already use every day.
Give your merchants a database worth staying for. Talking to Zeal takes two steps — tell us which kind of provider you are, then book straight into the right person's calendar.
Talk to sales
Activating Zeal on your card machines is a breeze
Choose your integration path
Connect host-to-host through our APIs or embed the on-terminal SDK. You get a sandbox, an integration guide and a reference implementation from day one.
Share your estate details
Send your merchant data file with TIDs, MIDs and terminal models. We prepare signed builds for each terminal type, with release notes and a rollback plan.
Pilot, then roll out
We prove the experience on a pilot cohort with hands-on support, then deploy remotely across your estate through your TMS. No hardware changes, no engineer visits.
Go live and activate
Your merchants get onboarding flows, training material and ready-made campaign templates for their first 90 days, and you track activation and usage by cohort.
This is how we’re revolutionising payments for our partners
See what Zeal delivers in the field. Our partners earn new revenue from their terminal estates, and their merchants get customer identification, loyalty and insight at the point of payment.
Merchants run Zeal on the card machines they already own.
More repeat visits for restaurants running loyalty on Zeal.
Customer profiles created for merchants using Zeal.
Don’t take our word for it
Manos Perdikaris
Business Unit Manager
Jean-Philippe Niedergang
CCO and CEO of EMEA Region
Boris Ferlet
SVP, Android & Partner Ecosystem
Ahmed Hanafi
Founder & CEO
Mostafa Al Sagheer
CEO
Zeal has flexible pricing to fit your business needs
Talk to sales to learn more about ongoing deals or partnership opportunities.
Custom Pricing
Differentiate your card machines and empower your merchants to grow their business.
Enable your card machines to:
Identify customers and offer exclusive rewards
Offer zero-friction card-linked loyalty
Showcase merchant branding and collect feedback
Provide merchants with powerful analytics
Provide you with powerful customer behaviour insights
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Frequently asked questions
Zeal transforms your card machines into intelligent customer engagement tools, enabling real-time customer insights, visibility over in-store customers, and frictionless loyalty programmes for your merchants.
By integrating Zeal, you unlock new revenue streams through value-added services, differentiate your offering in a competitive market, and significantly boost merchant retention.
Zeal enables your card machines to identify customers through their payment cards — recognising employees, airline passengers, or telecom customers at the point of sale. This allows you to offer tailored rewards linked to existing corporate benefits or loyalty programmes. With Zeal, you can strengthen strategic partnerships and drive higher transaction volumes for your merchants.
Yes. Zeal is fully compliant with PCI DSS, GDPR, and follows industry best practices for data protection and security. Our technology is designed with privacy and compliance at its core.
Zeal is also recognised by industry leaders such as Visa and Ingenico, and has trusted partners worldwide — reinforcing our commitment to innovation, reliability, and global scalability.
Choose your integration path (host-to-host API or on-terminal SDK), share your merchant data file with TIDs, MIDs and terminal models, and we handle the rest: signed builds, a supported pilot, then remote deployment across your estate through your TMS.
Zeal is card machine-agnostic and works seamlessly with all devices, both Android models and older Linux-based ones. We support all manufacturers including Ingenico, PAX, Castles, Verifone, Aisino and others, allowing you to activate Zeal across all your existing hardware with ease.
Yes. Zeal is built for global scalability and there are active card machines with Zeal in multiple markets globally. With multilingual support, regional compliance, and flexible integration options, Zeal can be activated anywhere — enabling consistent value-added services for your merchants worldwide.