Apple and Google are expected to release their contact tracing technology to developers tomorrow. But the UK’s National Health Service (NHS) says it won’t use the Apple-Google model, BBC reports. While the two tech companies are working on a “decentralized” approach, in which the contact tracing matches will happen on users’ devices, the NHS is opting for a “centralized” model, in which the matching and alerts happen via a computer server.
Apple and Google have promoted the decentralized approach as a way to protect users’ privacy from authorities and hackers. According to the BBC, the NHS believes the centralized approach will allow it to more easily audit the system and adapt it as new scientific evidence comes in.