The UK may have stepped back from a national digital ID scheme, but the underlying technology problem has not gone away. The Register reports that the National Audit Office has published a review warning that legacy government systems would have been a major obstacle to any government-wide digital identity effort. According to The Register, the NAO’s review looks across the digital identity landscape and draws lessons for any future attempt to build a national system. Its central point is that digital identity is not just a single app, credential, or database. It depends on a larger operating model: services, credentials, standards, providers, data governance, and public- and private-sector coordination. The political context is that the national digital ID proposal has already been abandoned. The Register reports that newly appointed Prime Minister Andy Burnham cancelled the scheme earlier this year, after it had been announced less than a year earlier by his predecessor, Keir Starmer. The government had also reversed a plan to make digital ID compulsory for right-to-work checks, following questions about cost, funding, and civil liberties. The NAO’s practical warning is about the state of the government’s existing estate. The review identified legacy systems as a barrier because they rely on inconsistent data standards and can represent the same individual in multiple ways. That makes it harder to connect records across services, which in turn limits what a digital identity layer can reliably do. That is a mechanical problem, not only a policy one. A digital ID system depends on confidence that a credential maps to the right person and the right records in the right context. Where systems use inconsistent standards or represent the same person differently, joining up data across services becomes harder. The Register cites Gareth Davies, head of the NAO, saying that even though the government is not proceeding with its recent plan, the broader question remains: how people can prove who they are, or prove something about themselves, conveniently and securely in digital settings. He also pointed to international experience suggesting that digital identity works best when people see everyday utility and when security and privacy protections are effective. The NAO’s conclusion, as reported, is that any future government-wide proposal would need to be clearer about objectives and delivery model. It would also need to explain how it would deal with longstanding constraints in legacy systems and fragmented data, rather than treating those constraints as implementation details to be solved later. For policymakers, the report leaves the issue alive even after the scheme’s cancellation. The demand for secure digital proofing remains, but the delivery conditions are still unresolved. Who benefits: Too early to tell. The NAO’s review emphasizes that any future system would need clear objectives, a delivery model, and effective security and privacy protections. Who's exposed: Departments relying on legacy systems with inconsistent data standards are exposed because those systems would constrain what a government-wide digital identity system could achieve. Policymakers are also exposed if they revive digital ID without explaining how fragmented records would be addressed.