The Four Things Every Successful eID System Has in Common — And What They Tell You About Which IDs to Accept

Part 3 of 5 — A Trinsic Companion Series to PwC's Digital Identities Across the World Report

In Part 1 of this series, we covered the headline finding from PwC's global digital identity report: 67% average eID adoption across 42 countries, with several markets at 90%+. In Part 2, we turned that data into a three-tier integration roadmap, which markets to prioritize today, where to build next, and where to lay groundwork.

Now we get to a harder question: how do you evaluate the quality of a digital ID?

Adoption rates tell you how many people have a digital ID. They don't tell you whether that ID is trustworthy, technically reliable, or worth integrating. For that, you need a different lens.

PwC's research across 42 countries identifies four recurring characteristics of the world's best-performing eID systems. They're worth understanding not just as policy analysis, but as a practical framework for deciding which digital IDs your business should accept.

1. Governance Clarity

The most successful eID systems have well-defined legal frameworks, clear lines of accountability, and strong coordination between public and private sectors. In practical terms, this means the scheme has defined who is liable when something goes wrong, how data is handled, and what standards providers must meet to participate.

For businesses, governance clarity translates directly to reliability and longevity. An eID backed by a clear legal framework is a safer integration partner. It's less likely to change its API arbitrarily, less likely to disappear, and more likely to have the accountability structures that make it defensible to your own compliance team.

When evaluating a digital ID network, ask: is there a clear legal basis for this scheme? Is there defined liability? Is it audited against published standards?

2. Robust, Interoperable Infrastructure

The highest-adoption eID systems are built on scalable, mobile-first architectures with clean integration pathways. Critically, the best ones use open standards, like ISO 18013-5 for mobile driver's licenses, OID4VP for EUDI wallets, SD-JWT for credential presentation.

Open standards matter to businesses for a simple reason: they prevent lock-in. A proprietary eID protocol means your integration only works with that one provider. An open-standards-based scheme can be accessed through a shared integration layer that spans multiple providers simultaneously.

This is one of the core reasons Trinsic's platform is valuable. Rather than integrating with each eID's proprietary stack individually, a single Trinsic integration gives you access to BankID Norway, MitID, BankID Sweden, iDIN, SPID, itsme, and more, through one API.

→ Explore how Trinsic's integration works →

3. Security and Public Trust

Digital IDs are cryptographically signed at issuance and verified against a government source of truth in real time. When users trust a digital ID enough to use it for banking, tax filings, and healthcare, the resulting credential has been stress-tested at scale in high-stakes contexts.

PwC notes that in markets where privacy concerns are unresolved, private-sector integration tends to lag. Conversely, the most trusted eID systems reduce fraud to remarkably low levels, fraud rates of 0.00042% have been documented in major European systems.

For businesses, the verification quality of a digital ID is only as strong as the issuance process behind it. An eID issued under a rigorous security framework, used by millions of people daily, is a fundamentally better verification signal than a one-time document scan.

Trinsic's Acceptance Assurance Framework maps each supported provider's security model to a standardized assurance level, so you can express your risk tolerance once and automatically accept every verified user that meets it, without evaluating each provider from scratch.

→ See how Trinsic's Acceptance Assurance Framework works →

4. Everyday Relevance

The single most consistent predictor of high eID adoption is simple: the system is embedded in things people do every day.

Denmark's MitID is required for online banking and healthcare appointments. Norway's BankID Norway spans more than 16,000 services, banking, government, insurance, e-commerce. Belgium's itsme is the standard login for financial services across the country. Sweden's BankID Sweden is used by over 99% of Swedish adults aged 18–65.

Everyday utility creates two things that matter to businesses: scale (more users have it) and user confidence (they know exactly how to use it). When your onboarding flow accepts MitID or BankID, you're not just accepting a credential, you're benefiting from the years of trust capital those systems have built through constant use.

How to Apply This in Practice

PwC's four factors give you a principled framework for evaluating any eID system. In practice, applying it across dozens of providers in dozens of markets is genuinely complex work.

That's exactly what Trinsic has done. Every provider in Trinsic's network has been evaluated against governance quality, infrastructure standards, security model, and real-world utility. The result is a structured assurance framework that maps to your existing compliance requirements, so you can expand your acceptance footprint without expanding your compliance risk.

Explore Trinsic's Acceptance Assurance Framework → See all providers in Trinsic's network → Talk to the team about your assurance requirements →

This is Part 3 of Trinsic's companion series to PwC Strategy& "Digital Identities Across the World" (2025). Data sourced from PwC's primary report. Trinsic makes no claims about the accuracy of PwC's underlying research.