Google and Apple to roll out phase two of contact-tracing system

Operating system update will allow opt-in to coronavirus exposure notifications without need of an app

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Apple and Google are preparing to roll out phase two of their Covid-19 contact-tracing system, allowing users to receive notifications about their exposure to infectious people without needing to install a specific app.

But the system will still not fully work in Britain until the UK government releases its own contact-tracing app - currently being trialled in the Isle of Wight and the London borough of Newham - nationally.