European Digital Identity Wallet (EUDIW): From Pilots to Real-World Impact

The Future Ecosystem in a Glimpse

Before diving into what is being built and tested today, it is worth briefly recalling the ecosystem taking shape. Three types of actors will interact daily through the wallet:

• Attribute providers — banks, telcos, energy suppliers and public administrations issuing verified credentials such as an address, a driving licence, an "over 18" attestation or, in the future, a verified IBAN or an income proof .
• Wallet issuers — public and private organisations delivering the wallet itself, with at least one available in every Member State.
• Relying parties (also called Service Providers) — banks, merchants, mobility operators and public services requesting and verifying credentials whenever a customer interacts with them.

The elegance of the design lies in what is not exchanged. A merchant verifying that a customer is over 18 doesn't need to see a full date of birth. A bank confirming an address doesn't need a copy of a utility bill. Less data shared, more trust established. And beyond identification, the wallet will also support qualified electronic signatures and operate both in store or in agency interactions and online  — opening up a much broader spectrum of use cases than identity alone.

This article builds upon Worldline previous publication exploring the different roles banks will take on in the EUDIW ecosystem, focusing here on the concrete outcomes of the current Large Scale Pilots (LSPs) and what they mean for banks moving forward.

Large Scale Pilots & Worldline's Contribution

A regulation alone does not make a working ecosystem. That is why the European Commission has launched the LSPs — collaborative programmes where Member States, public administrations, banks, payment providers and technology players test the European Digital Identity Wallet in real conditions, with real users and real cross-border flows.

LSP1 was about proving the concept works. One of the standout result was the successful execution of a cross-border, identity-enabled payment in production, validating the EUDI Wallet Consortium's specifications. Worldline was part of that achievement, alongside ecosystem partners who share the same commitment to making digital identity operational rather than theoretical. Other initiatives have confirmed the underlying complexity of this new ecosystem. The POTENTIAL project, for example, reported a 76% success rate in its final tests, a figure that highlights the significant integration and interoperability challenges that remain, precisely the complexity our Hub is designed to solve.

LSP2 marks the shift from experimentation to deployment, through two flagship consortia: APTITUDE, focused on interoperability and scale across four use cases (Digital Travel Credentials, Ticketing & Check-in, Mobile Vehicle Registration Certificates, and Payments & Banking), and WE BUILD, coordinated by KVK (the Dutch Chamber of Commerce), the Dutch Ministry of Economic Affairs and Bolagsverket (the Swedish Companies Registration Office), gathering more than 180 organisations across 26 countries to pilot 13 cross-border use cases.

Worldline is participating in both consortia in a strategic and active manner. The goal is not just to comply, but to shape the future framework. Being at the heart of the Payments-related Work Packages allows Worldline to:

• Shape the framework: actively contribute to recommendations that will influence future EU rules and key payment body standards.
• Prove out the technology and use cases: validating the end-to-end technical stack (including OpenID4VP/VCI) and critical use cases like payment initiation, EUDIW-based KYC, and Strong Customer Authentication on both card and Account-to-Account (A2A) payments.
• Build for reality: All these insights directly drive the design of Worldline Digital Identity Hub, ensuring it is built on proven, interoperable technology from day one.

Beyond the pilots, LSP2 is also helping the ecosystem converge on four priorities that will determine real-world adoption: seamless customer experience across authorisation and payment flows; infrastructure built for scale and cross-border resilience; sustainable business models that reflect the operational costs of verification and orchestration, while unlocking new value around high-value verified attributes such as IBAN, income or address data; and contractual clarity — defining responsibilities, liability frameworks and SLAs so both public and private stakeholders can invest with confidence.

How Worldline Can Help Banks Be Connected to This Ecosystem

The EUDIW will not succeed if every bank has to independently negotiate, integrate and maintain connections with dozens of wallet providers, attribute issuers, and constantly evolving trusted lists across 27+ countries. Complexity, if left unmanaged, will slow adoption — and ultimately erode the value the wallet is meant to create. This is precisely the role Worldline plays in the European digital identity ecosystem. The conviction has been the same for years: digital identity should be as trusted and effortless as digital payments. Decades of building infrastructure that processes billions of payment authentications every year, across borders and under strict regulation, have shaped that view. The EUDIW feels like a natural extension of that mission — bringing the same principles of trust, security and frictionless experience from the payment moment to every digital interaction that requires identity.

Through the Worldline Digital Identity Hub, the ambition is to be the trusted intermediary that absorbs ecosystem complexity, so banks can focus on their customers and their business. From wallet connectivity and attribute provisioning to trust-list management and payment-native authentication, the Hub covers the full stack — so banks plug into Europe's digital identity ecosystem through one unified gateway. The promise is simple: plug into Europe's digital identity ecosystem through a single, trusted door — and let Worldline handle the complexity behind it.

When should banks start preparing?

End of 2027 sounds distant. It is not. For any institution operating SCA at scale, 2026 is the year to pilot and refine customer journeys, and 2027 is the year to reach full operational readiness.  The institutions that move early will not just be compliant. They will be the ones shaping how their customers actually experience digital identity in Europe — and capturing the new value streams that come with it.

 A Turning Point for European Digital Identity

The EUDIW ecosystem is at a turning point. Validated prototypes, cross-border pilots, and strong coalitions across Europe have laid the foundations. The next two years will determine how this momentum translates into everyday benefits: faster onboarding, lower fraud risk, smoother payments, and a more trusted digital experience across Member States.

Worldline is committed to supporting this transition and it is building the infrastructure and trust layers that will turn the European Digital Identity Wallet into a reality.

The opportunity is clear. The momentum is real. Now is the time.

More information about Worldline Digital Identity Hub.

References:

- What are the Large Scale Pilot Projects - EU Digital Identity Wallet: https://eudiw.eu

- EUDI Wallet Consortium: https://eudiwalletconsortium.org

- POTENTIAL Project Final Conclusion: https://www.potential-project.eu

- WE BUILD Consortium: https://www.linkedin.com/company/webuildconsortium