Building for the EUDI Wallet ecosystem: what eID Easy developers worked on in June

In this post, we recap what eID Easy developers worked on in June around the EUDI Wallet ecosystem: building a Java SDK during the German EUDI Wallet Ecosystem Hackathon, testing real wallet verification use cases during the France Identité Interoperability Event, and improving the EUDIW Playground for businesses, developers, and wallet builders.

30 Jun
,
2026
30 Jun
,
2026
# min read
eID Easy EUDIW Playground

June was a hands-on month for eID Easy’s wallet work.

Across the German EUDI Ecosystem Hackathon and the France Identité Interoperability Event, our team focused on one practical goal: making it easier for businesses, developers, and wallet builders to work with digital identity wallets in real-world scenarios.

The EUDI Wallet ecosystem is still developing. Standards are evolving, use cases are still becoming clearer, and many teams across Europe are testing similar flows as the market learns what wallet-based identity will look like in practice. That is exactly why hands-on building and interoperability testing matter.

For eID Easy, June was about turning wallet conversations into working tools.

Building a Java SDK at the German EUDI Ecosystem Hackathon

During the German EUDI Ecosystem Hackathon on June 4–5, our team built a Java SDK for eID Easy.

The reason was simple: many businesses and identity-related systems use Java, especially in authentication, authorization, and enterprise environments. Until now, eID Easy already had a PHP SDK, but adding Java support helps make wallet and identity data integrations more accessible to a wider group of developers.

The SDK supports the bigger direction we are building toward: one integration with eID Easy that allows businesses to receive identity data from different identity providers and wallet ecosystems, without having to build and maintain separate integrations for every scheme.

That includes existing identity schemes such as itsme, Smart-ID, iDIN, BankID, and the new generation of EU Digital Identity Wallets.

→ For businesses, this means a simpler path to adopting digital identity wallets. 

→ For developers, it means less integration complexity and a more familiar way to start building.

Testing real wallet flows during Interoperability Week

Later in June, eID Easy joined the France Identité Interoperability Event, where wallet builders, issuers, and verifiers from across Europe tested how their solutions work together.

Our focus was on verifier-side interoperability. In plain English, that means testing how a business or service can request and verify identity data from a user’s digital wallet.

The team worked with key EUDI Wallet use cases, including:

  • PID verification
  • mDL verification
  • Age verification, including the EU Age Verification Profile
  • OID4VP draft 18 and OID4VP 1.0
  • HAIP and OID4VP schemas

This kind of testing is important because digital identity standards only become useful when different wallets, providers, and verification services can actually work together. Interoperability is where the theory becomes real.

Representing eID Easy at the event were Mats-Joonas Kulla and Andrii Hrynchuk.

Introducing the EUDIW Playground

One of the practical outcomes of this work is the eID Easy EUDIW Playground.

→ The Playground is a testing environment where businesses, developers, and wallet builders can try EUDI Wallet verification flows in a simple way.

It allows users to 

  • select a wallet, 
  • choose the type of credential they want to test, 
  • generate a QR code, 
  • scan it with a wallet, and 
  • see what kind of identity data is returned.

→ For businesses, the Playground makes wallet-based verification easier to understand before starting a full integration, while also giving them a quicker way to test integration through OAuth.

→ For developers, it shows how the flow works in practice.

→ For wallet builders, it offers a way to check whether their wallet works with eID Easy’s verifier flow.

This is especially important because the wallet ecosystem is still in its early stages. Many tools and implementations are still being tested, standards are still moving, and practical examples help everyone understand what is possible.

The Playground is our way of making EUDI Wallet testing more accessible, more practical, and easier to explain.

Try it here: https://eudiw-playground.eideasy.com/

Why this matters

EUDI Wallets are coming, but adoption will depend on how easy they are to test, understand, and integrate.

Businesses should not need to follow every technical standard, build separate integrations for each wallet, or wait until the ecosystem is fully mature before learning how wallet-based identity could work for them.

That is where eID Easy comes in.

We are actively building around EUDI Wallets, testing real interoperability flows, and creating tools that help businesses and developers move from “what is this?” to “how can we use this?”

June was another step in that direction — and there is more coming.

More latest articles

See all news
See all news
eID Easy Company Update June 2026
1 Jul
,
2026
30 Jun
,
2026
Announcements
Product Updates

eID Easy Monthly Update: June 2026

Read article
eID Easy Live Session on EUDIW
19 Jun
,
2026
22 Jun
,
2026
EU Digital Identity Wallet

EUDIW Made Easy: Live Session Recap and Q&A Highlights

Read article