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Go Live with eIDAS 2.0: The EUDI Wallet Connector
The Lissi EUDI Wallet Connector is your production-ready, full-control infrastructure for eIDAS 2.0. Host the connector in your own environment, connect to all European Digital Identity Wallets, and launch eIDAS-compliant identification (PID), payment (SCA), credential (EAA) and signing (QES) use cases in weeks, not years.
Make or Buy
Why EUDI Wallet Integration is a 7-Figure Challenge
Sending the first wallet request is the easy part. The real cost is keeping up: every national wallet, ARF revision and new use case has to be implemented, tested and maintained.
And from 24 December 2027, banks must accept certified EUDI Wallets when customers ask to use them.
Constant protocol and regulatory changeOpenID4VCI, OpenID4VP, SD-JWT VC, ISO mdoc and HAIP keep evolving, alongside the ARF and Implementing Acts. Every change means impact analysis, re-implementation and re-testing. This requires a dedicated team.
01
Growing use-case complexityPID for KYC, SCA for payments, QES authorisation, attestation issuance: each flow brings its own regulatory and technical requirements. You need deep in-house technical and regulatory expertise to build and maintain these compliant requests.
02
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Interoperability with every walletEach of the 27 member states must provide at least one wallet, each with its own release cycle and national profile. You test, fix and retest against all of them.
03
Trust managementYou are responsible for managing the entire trust infrastructure, including complex PKIs, certificate lifecycles, and revocation lists.
04
Constant protocol and regulatory change
Growing use-case complexity
Interoperability with every wallet
Trust management
Make means running an EUDI Wallet product team inside your organisation – indefinitely.
Make or buy: what's the real difference for you?
Our Make-or-Buy Calculator compares the full cost of building and running EUDI Wallet integration in-house with the cost of buying the Lissi Connector – over several years, not just to go-live. We walk you through it in a 30-minute session, based on your team setup, day rates and use cases.
The solution
The Lissi EUDI Wallet Connector: Your eIDAS 2.0 Infrastructure
The Lissi EUDI Wallet Connector is a production-ready software component that abstracts away the full complexity of the eIDAS 2.0 ecosystem. It provides your organization with a single, stable, and developer-friendly API, enabling you to interact with all compliant EUDI Wallets. Instead of managing dozens of protocols and evolving regulations, your team can focus on what it does best: building your core product and user experiences.
Platform capabilities
Built for EUDI Wallet integration, ready for enterprise
Wallet interoperability, eIDAS 2.0 compliance, trust management and enterprise support — built into the Lissi Connector.
Integrate once, connect to every wallet
One API to connect to all future certified EUDI Wallets across all 27 EU member states
Continuously updated to meet the evolving Architecture Reference Framework (ARF) and Implementing Acts
We actively participate in EU Large-Scale Pilots (LSPs) to test against
the evolving ecosystem
the evolving ecosystem
We shield you from complexity, including national divergence in wallet implementations, through our active contact with national teams
Regulatory certainty, backed by contract
We provide contractually guaranteed compliance with the eIDAS 2.0 regulation and its Implementing Acts
Our solution is built to meet the high-security standards of regulated industries, including ISO 27001 and DORA requirements
We continuously monitor and implement all regulatory and technical updates for you
No need to rebuild your system landscape
Connects natively to existing IAM systems and identity infrastructure
Integrates with your existing databases and backend systems
Supports existing HSM and key-management setups
Trust, verified automatically
Manages the complete trust chain of the eIDAS 2.0 ecosystem
Verifies EU Trusted Lists to check issuer certification status
Manages revocation lists to ensure credentials are valid at the time of use
Handles complex PKI and certificate lifecycle management
Reliable operations, binding commitments
Provides a production-ready, enterprise-grade SLA. Open-source projects often do not fulfill the contractually required compliance guarantees expected by regulated organizations
Includes a one-business-hour response time for critical issues, backed by our expert team
We provide a contractual guarantee for functionality, maintenance, and security, de-risking your implementation
You get comprehensive documentation, developer-friendly APIs, and responsive expert support.
One deployment, many tenants
Purpose-built for intermediaries, banks, and large enterprises with full multi-tenant support
A single, efficient deployment can securely manage multiple downstream clients or internal departments in complete logical isolation
Includes interfaces and automation for complex certificate handling and management for your Relying Party portfolio
From KYC to QES
Every eIDAS 2.0 use case, one Connector
Verify and issue everything your customers bring in their EUDI Wallet through the same API: the Lissi EUDI Wallet Connector.
Identify new customers without video ident
High-assurance onboarding with the verified Person Identification Data from the wallet.
Pre-configured templates for common PID requests
OID4VP for all compliant EUDI Wallets
Selective disclosure – request only what you need (e.g. “over 18”)
Meets eIDAS 2.0 Level of Assurance High
Explore KYC
Approve with the wallet instead of SMS OTP
Enables the EUDI Wallet to be used for Strong Customer Authentication (SCA) as required by PSD2/PSD3
Supports the prior issuance of an SCA credential to the wallet, which is required for the authentication flow
Supports diverse use cases beyond payments, including bank account logins or securely authorizing changes to user information
Uses OIDC4VP and secure authentication flows to approve transactions or high-risk logins
Explore SCA
Legally binding signatures, authorized via the wallet
Allows you to identify a user and get the user's authorization for a QES via their EUDI Wallet
Manages the authentication and data-binding flow required for the wallet's authorization
Enables you to forward this secure identification and authorization to your existing QTSP partner, who then creates the final QES
Explore QES
Electronic attestations (EAAs)
Issue your own attestations to your customers’ EUDI Wallets and verify attestations from other issuers.
Issue attestations via OpenID4VCI, as SD-JWT VC and mdoc
Sign securely with keys in your own HSM
Manage status lists and revocation
Support pre-authorized and authorization code flows
Verify EAAs via OpenID4VP and the W3C Digital Credentials API, with selective disclosure and DCQL-based queries
Explore EAAs
Credentials with the legal weight of paper documents
Work with attestations that have the same legal effect as lawfully issued paper documents under eIDAS 2.0.
For QTSPs: issue QEAAs via OpenID4VCI, as SD-JWT VC and mdoc, signed with keys in your HSM
Verify QEAAs and check the issuer’s qualified status against EU Trusted Lists
Perform automated trust checks, such as wallet certification, holder binding and replay prevention
Request only the attributes you need through selective disclosure and DCQL-based queries
Support X.509-based trust lists and OpenID Federation
Explore QEAAs
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On-premise first
Runs in your environment: your data, your keys, your perimeter
The Lissi EUDI Wallet Connector is delivered as a containerized software package that runs entirely within your trusted IT environment. Whether in a traditional data center or your private cloud (e.g., Azure, AWS, Google Cloud), you retain 100% control. This "full-control" model is our foundational design principle and is essential for regulated organizations.
Your data stays with you: Your data, your users’ data, and your cryptographic keys never leave your IT perimeter. You retain full control over data residency, processing rules, and security configurations, a non-negotiable requirement for financial and public institutions.
Reduced legal & procurement friction: Accelerate your project timeline. Because Lissi provides software and does not process your end-users’ personal data, no cumbersome Data Processing Agreement (DPA) is required between our companies. This means less legal overhead and faster procurement.
Leverage your existing security: The Connector is designed to fit into your world, not the other way around. It features out-of-the-box support for your existing enterprise keystores, including Azure Key Vault, HashiCorp Vault, or your custom HSMs and key management systems.
Trust & expertise
Why regulated organisations build on Lissi
Lissi works partner-first: We provide you with the production-ready infrastructure and deep-level expertise to become a leader in the eIDAS 2.0 ecosystem. You own the customer relationship, while the Connector runs in the background of your products. Behind it stands a team that has helped shape the EUDI Wallet ecosystem from the start.
Support
Direct access to the engineers who build the Connector, not a first-level support desk. SLAs up to 24/7, with a 1-hour response time for critical incidents.
Expertise
You get a future-proof, compliant product. Lissi isn’t just following the standards; we are actively shaping them. We contribute to the EUDI Wallet Large-Scale Pilots (EWC, POTENTIAL) and were among the winners of the German EUDI Wallet Challenge. This deep, hands-on expertise is built directly into the Connector, ensuring you are always one step ahead.
Independence
You get long-term stability and sovereignty. At Lissi we control our entire technology stack, ensuring complete independence from external frameworks. This provides you with a reliable, stable, and sovereign foundation for your mission-critical services, free from the risks of unforeseen third-party dependencies.
Empowering Your Architects with Seamless Integrations
We empower your teams by fitting into the world they already know. The Lissi Connector is designed for seamless integration with the enterprise tools you already use.
EUDI Wallet Readiness Check
Is your institution ready for the EUDI Wallet and AMLR?
See what’s already on track, where the gaps are and what your organisation should prioritise next — across regulatory, project and technical readiness.
Your readiness snapshot
Example result
68
%
Overall readiness
Regulatory
On track
Project
Needs work
Technical
At risk
What is an EUDI-Wallet Connector?
An EUDI-Wallet Connector enables your organisation to interact with European Digital Identity Wallets. These wallets speak special protocols that are very complex and are still under development. Your organisation can either implement the technical standards itself or use EUDI-Wallet Connector software.
An EUDI-Wallet connector must be compatible with all EUDI-Wallets in the 27 EU member states and must be regularly adapted to the new requirements of the architecture reference framework. The connector provides your organisation with common API interfaces that greatly simplify integration. This means that you do not have to worry about implementing the specific protocols of the EUDI-Wallet, but can focus directly on the implementation of your use case.
What advantages does the Lissi EUDI-Wallet Connector offer?
Faster integration
Faster integration of use cases
Simple integration
Reduction in the complexity of integration
Easy maintenance
Reduction of the ongoing maintenance effort
eIDAS 2 compatibility
Compatibility with the European Digital Identity System (eIDAS)
Which functions does the Lissi EUDI-Wallet Connector offer?
Issuance of electronic attestations of attributes
Verification of electronic attestations of attributes
Revocation of electronic attestations of attributes
Authentication of EUDI-Wallet users
Features of the Lissi EUDI-Wallet Connector
Support for EUDI-Wallets that support the technical specifications of the eIDAS 2 Architecture Reference Framework (incl. Lissi ID-Wallet)
Multi-tenant capability - create subdivisions of your organisation to represent different legal entities or departments
Trust management -
management of
trustworthy issuers
management of
trustworthy issuers
Support of
call-back URLs for
better user acceptance
call-back URLs for
better user acceptance
Qualified website
authentication certificates
(QWAC) for high trust
authentication certificates
(QWAC) for high trust
How you can benefit
Cost reduction
Reduce risks and costs by using verifiable credentials for your processes.
Automation
Increase efficiency and decision-making speed through automated decision-making.
Reusable Identity
Minimise third-party dependencies and costs by relying on verifiable customer data stored in the wallet
Flexibility
Adapt your information needs depending on the use case with selective disclosure.
Conversion Rates
Increase your conversion rate through a smooth flow from offer to purchase process
Access to offers
Facilitate access to your offers with the digital customer card.
No Middle-man
Exclude commission-hungry middle men from your customer relationship.
Trust Relationships
Manage customer data transparently and increase trust in your organisation
Direct Offer
Place new service or product offers directly in the ID-Wallet of your customers.
Vouchers & Discounts
Send sales promotions directly to your customers' ID-Wallet
Loyality
Increase customer loyalty through increased personalisation and improved customer retention.
Lifetime value
Increase the lifetime value of your customers through a lasting customer relationship.
Discover the user flow of the Lissi Connector
Test our demo now without obligation
Test it with our demonstration
How can end users interact with public organsations and large enterprises?
Try Lissi DemoDemo for credential issuance into EUDI-Wallet Implementation
Simply issue one of the four proofs via QR code or e-mail directly into your own wallet.
Demo for credential verification into EUDI-Wallet Implementation
Have you already issued a certificate? Here you can simply request it by QR code or e-mail.
Easily host and implement our solution
API Integration
Connect your internal IT-infrastructure with easy to handle REST APIs with our EUDI-Wallet Connector.
On Premise Hosting
The Lissi EUDI-Wallet Connector is available as cloud offering for testing purposes and as Docker On-Premise software for productive use cases.
Accelerate your use case integration with our guided pilot program
API software for organisations + wallet for users
Insights into ecosystem developments
Expert guidance and consultation
Good to know
Frequently asked questions
Answers to what organizations ask before working with Lissi – from hosting and data control to wallet coverage and getting started. Can't find what you are looking for?
Ask our EUDI Wallet experts!What is an EUDI Wallet connector?
What is the difference between an EUDI Wallet connector and a business wallet?
Do organizations need a connector to accept the EUDI Wallet by December 2027?
Which use cases does the Lissi EUDI Wallet Connector cover?
Does the Lissi EUDI Wallet Connector support OpenID4VP, OpenID4VCI, SD-JWT VC and mdoc?
Can a wallet gateway be self-hosted or used as a managed service, and does Lissi see personal data?
How does an EUDI Wallet adapter integrate with IAM, HSM and core banking systems?
Should we build our own EUDI Wallet integration or buy a ready-made gateway?
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