EUDI Wallet in Virtual Data Rooms: How European Digital Identity Will Change Document Access and Deal Signing

Virtual data rooms already sit at the centre of transactions in which identity, confidentiality and timing matter: M&A, fundraising, real-estate deals, debt financing, legal reviews and other processes where sensitive documents are shared with tightly controlled groups. The European Digital Identity Wallet, usually shortened to EUDI Wallet, adds a new element to that process. Instead of asking every participant to prove who they are separately to every service, the wallet is designed to let a person or organisation present verified identity data and certified attributes in a reusable, cross-border form. It can also support qualified electronic signatures. As of October 2026, this change is still moving from regulation and pilot work into national rollout, with Member States required to provide at least one wallet by the end of 2026. For virtual data rooms, the immediate significance is not the disappearance of passwords or existing controls. It is the arrival of a common European trust layer that can make identity checks, access decisions and signing more consistent when a deal involves people and companies from several EU countries.

Why EUDI Wallet Matters to Virtual Data Rooms

The legal basis comes from Regulation (EU) 2024/1183, which amended the eIDAS framework and entered into force in May 2024. It requires each EU Member State to provide at least one European Digital Identity Wallet and sets common rules for how wallets should identify users, exchange verified information and work across borders. The Commission adopted the first major implementing rules in late 2024 and updated several technical specifications again in July 2026 through Implementing Regulation (EU) 2026/1731. That timeline matters because EUDI Wallet is not a single commercial product that one supplier can switch on for the whole EU. National wallet solutions must meet common requirements and interoperate with services that choose or are required to accept them. In September 2026, EU testing activity was still focused on checking that national wallets, issuers and relying services work together correctly ahead of launch. A VDR provider planning an integration therefore needs to treat 2026 as a transition year rather than assume that every deal participant already has a usable wallet.

In practical terms, the wallet is intended to hold or present person identification data and electronic attestations of attributes. Person identification data can establish who the user is, while an attestation can prove a particular fact, right or status. Depending on what has been issued to the wallet, this could include information such as a professional qualification, a company-related role or another verified attribute needed for a transaction. The user remains in control of what is presented and must approve the release of requested information. The amended eIDAS rules also support selective disclosure, so a service should be able to request the data it actually needs instead of collecting a wider identity file by default. This is highly relevant to confidential deal work. A data room normally needs enough information to know who is entering and what that person is allowed to see, but it does not automatically need every piece of personal information that may exist in an identity document.

For a VDR, the most useful change is the separation of three questions that are often mixed together today: who is the person, what can be verified about that person, and what access should that person receive inside a particular deal. EUDI Wallet can strengthen the first two, but the third remains a transaction decision. A verified identity does not itself justify access to a sale memorandum, customer contracts or a highly restricted clean-team folder. The deal owner, legal advisers and VDR administrators still have to define permissions according to the transaction. The wallet can make the evidence behind that decision more reliable. For example, a bidder’s adviser could present verified identity information when joining the room, while a separate attestation could help establish a relevant role or mandate. The VDR would then apply its own access policy. This is an important distinction because European digital identity can improve trust in the onboarding process without replacing the confidentiality rules, approval chains and information barriers that govern serious due diligence.

From Account Credentials to Verified Identity and Authority

Traditional VDR access usually begins with an invitation sent to an email address, followed by a password, a one-time code, an authenticator app or another form of multi-factor authentication. Those controls can be strong, but they mainly prove that the person attempting to sign in controls the registered account and authentication factor. They do not always establish the user’s legal identity in a standardised way. EUDI Wallet can add that missing layer by allowing a participant to present verified identification data from a wallet issued under a high-assurance electronic identification scheme. The practical user journey could still look familiar: a person receives an invitation, chooses EUDI Wallet as an identity option, approves the requested data on their device and then enters the room after the deal’s own approval rules are satisfied. The difference is that the VDR is no longer relying only on an email address, a manually reviewed passport copy or a local identity process that may be difficult to assess in another country.

Authority is more complicated than identity, and this is where deal teams need to be careful. The EUDI framework allows wallets to store electronic attestations of attributes, and the Commission has confirmed that these attestations can be used to represent delegated powers such as representation rights or a power of attorney. That could be valuable in transactions where a person is acting for a company, fund, lender or other legal entity. However, eIDAS does not create a single EU-wide legal meaning for every mandate. The existence, scope and validity of a delegation still depend on the law and context that govern it. A wallet might therefore help a VDR receive stronger evidence that a person holds a stated mandate, but it does not automatically answer every corporate-authority question. In a significant signing or approval step, counsel may still need to check board resolutions, corporate registers, powers of attorney, signing policies or other transaction documents before accepting that the individual can bind the relevant entity.

This distinction also prevents an overly simplistic access model. A person can be fully verified and still have only limited permission in the room. An external accountant may need financial folders but not privileged legal material. A competition-law clean team may receive documents that ordinary members of the same bidder cannot access. A lender’s adviser may be entitled to one workstream but excluded from another. EUDI Wallet can give the VDR better evidence about identity and, where available, verified attributes, while the room continues to enforce deal-specific roles. Use of the wallet is also voluntary under the amended eIDAS framework, and access to private services cannot simply be made disadvantageous for people who do not use it. VDR providers should therefore expect a period in which wallet-based onboarding sits alongside existing methods. That hybrid approach is especially important for global deals because participants may come from outside the EU or from Member States whose national rollout and business use cases mature at different speeds.

How Document Access Could Change in M&A and Due Diligence

The clearest change is likely to appear at the point where a new participant is admitted to a room. Today, a complex transaction can generate repeated identity checks across banks, law firms, advisers, signing services and several data rooms. Some checks are required by law; others are internal risk controls. A wallet will not eliminate those obligations, but it can provide reusable, verifiable evidence that reduces the need to collect the same basic identity data again and again. In an M&A process, for instance, a seller could invite representatives from multiple bidders and allow wallet-based verification before access is approved. The VDR could receive the identity attributes it has declared it needs, link them to the invited user and then apply the permissions configured for that bidder. If the same person later joins another wallet-enabled transaction, the underlying verified data can be presented again from the wallet rather than recreated as a new profile from unverified information.

There is an important compliance condition for services that rely on EUDI Wallet data. Under the amended eIDAS rules, a relying party that intends to use wallets for a public or private digital service must register in the Member State where it is established. The registration includes information about the relying party, the intended wallet use and the data it expects to request. The rules also state that the relying party must not ask users for wallet data beyond what it registered. For VDR providers and transaction sponsors, this pushes identity design towards data minimisation. A room used for due diligence should not request date of birth, nationality, address and other personal details merely because the wallet can supply them. The better approach is to define the smallest set of information needed for the relevant control and document why it is needed. Where the VDR provider operates the wallet connection on behalf of a client, the parties will also need to determine clearly which legal entity is acting as the relying party and who is responsible for the associated data processing.

Cross-border transactions are where the benefit could become most visible. A French executive, Dutch adviser, Italian investor and German lender may currently arrive with different national electronic identities, documents and onboarding expectations. The EUDI framework is designed to give those national solutions a common basis for cross-border recognition. That can make it easier for a data room to accept trusted identity evidence without building a separate process for every Member State. It should not, however, be presented as a substitute for anti-money-laundering or know-your-customer checks where those duties apply. A regulated institution may still need to obtain specific evidence, screen parties, establish beneficial ownership or perform enhanced due diligence. The wallet can support those processes by supplying trustworthy identity data and attestations, but the legal obligation remains with the organisation subject to the relevant rules. In the VDR context, the most realistic near-term gain is better evidence at the access layer, not the automatic removal of every compliance step around the transaction.

Privacy, Audit Trails and Security in a Wallet-Enabled VDR

Privacy is one of the strongest reasons to treat wallet integration differently from a conventional identity-upload process. The EUDI rules are designed around user control: the wallet holder sees what information is being requested and approves the presentation. The framework also provides a transaction dashboard through which users can review relying parties they have connected with and, where applicable, the data exchanged. It includes mechanisms that can help users request erasure of personal data and report suspicious or allegedly unlawful requests to the competent data-protection authority. For a VDR, this means that identity collection should become more deliberate and visible. Instead of asking every participant to upload a full passport scan and then retaining that image in an account file, a room may be able to receive a smaller set of verified attributes for a defined purpose. This can reduce unnecessary personal-data exposure, although the VDR and its client still have to meet their own GDPR duties on lawful basis, retention, security, transparency and data-subject rights.

The wallet’s transaction history should not be confused with the VDR’s audit trail. They serve different purposes. The wallet can record identity-related interactions and data presentations, while the VDR needs to record what happened inside the deal workspace: when a user entered, which folders were available, which documents were viewed or downloaded, whether printing was permitted, when permissions changed and which administrator made the change. Those records can be important in disputes, internal investigations and post-deal reviews. A well-designed integration would therefore connect identity evidence to the VDR user record without replacing the room’s own activity log. If a user presents a verified identity at onboarding, the data room should be able to preserve a clear record of the verification event and the permissions subsequently granted, while still minimising the amount of personal data stored. That creates a more useful chain of evidence: verified person, approved transaction role, defined access rights and a separate history of document activity.

Security also needs to be viewed realistically. EUDI Wallet solutions must operate at a high assurance level and follow security-by-design requirements, which can strengthen protection against weak or easily forged identity checks. The wallet framework includes mechanisms for authenticating relying parties and verifying the authenticity and validity of wallets. Those safeguards can make impersonation more difficult, particularly when compared with workflows based only on email and uploaded document images. They do not remove the broader attack surface around a virtual data room. A compromised laptop, stolen unlocked device, malicious browser session, fraudulent administrator, social-engineering attempt or incorrectly configured permission can still expose confidential information. VDR providers therefore need to keep the controls they already depend on: secure sessions, strong account recovery, device and access monitoring, document restrictions, rapid revocation, administrator separation and incident response. EUDI Wallet can improve the quality of identity assurance, but document security still depends on the whole access chain after identity has been established.

EUDI Wallet and Signing Deals Inside a Virtual Data Room

Signing is the area where the legal effect of the EUDI framework is easiest to explain. Under eIDAS, a qualified electronic signature has the equivalent legal effect of a handwritten signature, and a qualified electronic signature based on a qualified certificate issued in one Member State must be recognised as a qualified electronic signature in the others. The amended framework requires EUDI Wallets to offer natural persons the ability to create qualified electronic signatures by default. The basic wallet service is free to natural persons, although Member States may apply proportionate measures so that free qualified signing is limited to non-professional purposes. That qualification matters in corporate transactions: deal teams should not assume that every professional signature made through a wallet will be free or that national implementations will package business signing in exactly the same way. The significant change is that trusted digital identity and access to qualified signing can sit much closer together, reducing the gap between proving who a signatory is and creating a signature with EU-wide legal status.

Corporate authority remains a separate question. A qualified electronic signature can provide strong evidence about the identity of the natural person who signed, but it does not by itself prove that the person had authority to enter into a specific transaction for a company. That authority may come from law, constitutional documents, board approval, an employment position, a power of attorney or another mandate. EUDI Wallet can help because electronic attestations may carry representation information, but the Commission has made clear that eIDAS does not standardise the legal meaning and validity of such delegations. Legal persons may also use qualified electronic seals, which are designed to support assurance about the origin and integrity of data, but a seal is not simply a substitute for a human signatory where the transaction requires a signature. For a VDR closing process, the sensible model is to treat identity, authority and signature as related but distinct checks. The room can help connect them, while the legal team still decides what evidence is sufficient for the particular agreement and governing law.

A future wallet-enabled closing workflow could be relatively simple for the user. A director enters the VDR using verified wallet data, reviews the final execution copy, starts the signing step and is handed to an integrated qualified trust service or another compliant signing flow. The wallet confirms identity and supports the creation of the qualified signature; the completed document and validation evidence can then be returned to the transaction record. If the signatory also holds a suitable attestation showing a representation role, that evidence could be associated with the signing event for review. The VDR can then preserve the signed document together with its own audit data, final version history and closing permissions. None of this requires the data room itself to become the issuer of identity or the creator of every trust service. Its role can be orchestration: connect the verified participant, the approved document, the relevant signing service and the transaction record in a controlled sequence. That is likely to be more valuable than merely adding another sign-in button.

What VDR Providers and Deal Teams Should Prepare for in 2026

The first preparation point is operational rather than technical: expect mixed adoption. Member States are due to provide wallets by the end of 2026, but real use in private business services will grow over time. A transaction opening in early 2027 may include some participants who use a national EUDI Wallet every day, some who have one but have never used it for a corporate deal, and others who do not have an eligible wallet at all. International bidders and advisers may also sit outside the EU framework. Because wallet use is voluntary, VDR providers need a fallback route that maintains comparable security without penalising users who choose another method. The best rollout is therefore likely to treat the wallet as a high-assurance identity option within a broader access design. Deal owners can then decide when wallet verification is useful, when another electronic identity is acceptable and when enhanced manual checks are required because the person, jurisdiction or transaction creates additional risk.

The second preparation point is governance. Before requesting wallet data, a VDR provider should decide what it genuinely needs, which entity will register as the relying party, how the requested attributes map to user permissions, how long resulting personal data will be retained and how the room will handle revocation or a changed role. It should also define what happens when identity evidence is valid but the user’s transaction authority is uncertain. For signing, providers should identify how qualified signatures will be created and validated and which qualified trust services will be involved. Testing should cover more than a successful login. Teams need to check mismatched names, expired or revoked attestations, changed corporate roles, replacement devices, lost access, emergency removal from a room and the preservation of evidence after a deal closes. These are ordinary transaction-control questions expressed through a new identity method, and answering them clearly is more important than adding unnecessary technical complexity to the user experience.

The broader change is that identity may become more portable while access policy remains local to each transaction. That is a useful shift for virtual data rooms. Today, much effort is spent re-establishing who a person is each time they enter a new service, while the more important business question is often what that verified person should be allowed to do. EUDI Wallet can reduce some of that duplication by providing a common European method for presenting trusted identity information, selected attributes and access to qualified signing. The VDR still has to decide which evidence it accepts, protect confidential documents, record activity, enforce information barriers and preserve a defensible transaction history. For deal teams, the practical benefit will come when those layers work together: identity is verified once with strong evidence, authority is checked for the action being taken, access is limited to the correct material and signatures are created with the level of legal assurance the transaction requires. That is the point at which European digital identity can materially improve the way cross-border deals are run.