The government has not yet named specific partners or provided details about data flows. Contact tracing was already used in limited form during the Covid response. The infrastructure now envisaged would remain in place permanently and could be activated when needed. That would create a system capable of capturing the movements of large parts of the population. It is not particularly plausible that it would remain limited to that purpose.

Scepticism is also fuelled by past experience. In 2021, mobility data from millions of people in Britain were analysed without their knowledge. Three years later, a similar exercise was carried out to identify electric car drivers. Researchers used anonymised mobile phone data in both cases to analyse movement patterns – once for vaccinated individuals and later for motorists. In the vaccination case, the analysis examined whether people went straight home after receiving a jab or visited shops.

Data Protection Assurances

Officially, the government emphasises that the data were anonymised and processed in line with the General Data Protection Regulation (GDPR). That may be correct. However, privacy advocates repeatedly warn that aggregated location data, when available in sufficiently large volumes, can still allow conclusions about individual behaviour. Place of residence, workplace and social contacts can be inferred using standard algorithms. AI systems could extract far more information from raw data, meaning even anonymised datasets might, in some cases, be reidentified.

The new strategy systematically builds on approaches tested during Covid. They are to be further developed and integrated into a permanent state infrastructure. That step is drawing criticism. What was previously justified as a temporary crisis solution could become a lasting feature of government data use.

At the same time, the government argues that better data are essential for responding more quickly to future crises. It insists that the Covid-19 pandemic demonstrated the importance of early detection and targeted action. However, evaluations of containment measures, which are only beginning in some countries, suggest the interventions had little impact on infection trends. Rather than careful evaluation, critics say the response continues to rely on surveillance and restrictions on freedom.

Tech Companies Involved

Another point of criticism concerns the role of large technology companies. As much location data originate from private platforms and telecom providers, the state would depend on their cooperation. Critics fear this could further blur the boundary between public health policy and commercial data use.

The absence of clear time limits also raises questions about what happens to the collected data after the end of a real or alleged pandemic. Without clear deletion deadlines and parliamentary oversight, a system once created could remain in operation for the long term.

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Once again, the debate centres on the conflict between security and freedom, to the detriment of civil liberties. In the case of an epidemic, policymakers could rely on citizens’ own interest in avoiding infection. Instead, the government places its faith in technological solutions whose effectiveness in shaping infection trends remains contested. Critics warn this could mark another step in the expansion of state surveillance.

It remains unclear whether the government will implement the plans. A broad public debate on the use of health data and privacy remains essential. Once mass surveillance is established, it may prove difficult to reverse.