Live demo proves the reusability of Once-Only Common Services for the EUDI Wallet at Contact Group meeting
26 November 2024 | 7 minutes read
On 19 November 2024, the European Commission presented a live Proof of Concept demo showing how the Common Services of the Once-Only Technical System(opens in a new tab) can be successfully reused by European Digital Identity Wallets.
European Digital Identity Wallets (EUDI Wallets)(opens in a new tab) will enable citizens and businesses to store identity data and electronic attestations or attributes in a secure wallet application. The wallets will allow citizens and businesses to identify themselves to access a wide range of online services, store and share digital documents, and create binding signatures.
The Once-Only Technical System (OOTS)(opens in a new tab) enables EU public authorities to securely exchange official documents and data at the request of citizens and businesses as part of cross-border administrative procedures. This system eliminates the need to manually search for, map, fetch and transfer data between Member State authorities, helping to cut red tape and improve efficiency(opens in a new tab) in the Single Market. The Once-Only Common Services(opens in a new tab) are a component of the Once-Only Technical System provided by the European Commission to help Member States ensure the proper exchange of data through the system.
This Proof of Concept demo was shown during a gathering of the ‘OOTS & EUDI Wallet Synergies and Interoperability Contact Group’, a group that regularly meets to discuss synergies between the Once-Only Technical System and EUDI Wallet. “Synergies” refers here to the possibility of one system reusing components or capabilities of the other system, either in part or in whole.
This Proof of Concept looked at three potential synergies. The first synergy showed that EUDI Qualified Trust Service Providers (QTSPs) can reuse the Once-Only Common Services to discover the authentic sources of evidence and to verify the authenticity of a document using technical capabilities of the Once-Only Technical System. The second synergy showed that citizens and businesses can use the Once-Only Common Services from their EUDI Wallets to discover the authentic sources able to issue electronic attestations of attributes. The third synergy showed that the Once-Only Semantic Repository can store EUDI Wallet rulebooks and other EUDI semantic assets. The demo proved that the reuse of the Once-Only Common Services to support the provision of services by EUDI Wallet service providers is possible and can bring major benefits for the future development of EUDI Wallets. By reusing the Once-Only Common Services, EUDI Wallets can rely on a system that is already live and in production use. This removes the need to develop the functionalities of the Common Services anew, which enables EUDI Wallet implementers to optimise investments, reduce the time-to-market, and minimise the risks associated with developing a new, duplicate implementation.
Videos
Watch the EUDI-OOTS Synergy demos .
This Contact Group meeting was also open to participants of the #5 OOTS Projectathon(opens in a new tab), a three-day testing event taking place in parallel. More than 170 participants followed the demo, on-site or online.
Find out more about the EUDI Wallet (opens in a new tab) and its synergies(opens in a new tab) with the Once-Only Technical System and stay up to date on our latest news by subscribing to our newsletter(opens in a new tab) or visiting the Once-Only hub(opens in a new tab).