Blockchain can be key to immunity passport success – but science must dictate rollout

The COVID-19 pandemic has ignited a reassessment of the role that technology can play in tackling health crises, as well as citizens’ right to privacy. This is particularly the case in the ongoing development of contact tracing apps, which have been heralded as the ticket out of the pandemic.

Another tool that has been suggested as one way of bringing the crisis under control – and has gained more and more attention over the last few weeks – are so-called ‘digital immunity...