Coronavirus: Ministers consider NHS contact-tracing app rethink

Concerns about the risks of deploying a go-it-alone UK coronavirus contact-tracing app are causing further delays.

A second version of the smartphone software was due to have begun testing on the Isle of Wight on Tuesday, but the government decided to postpone the trial.

Ministers are considering switching the app over to tech developed by Apple and Google.

But countries testing that model are experiencing issues of their own.

Health Secretary Matt Hancock had originally said the NHS Covid-19 app was to be launched across England - and possibly other parts of the UK - by 1 June.

But he subsequently said the government had decided it would be better to establish a network of human contract tracers first.

However, the BBC has discovered that one of the main reasons the initiative is running behind schedule is that developers are having problems using Bluetooth as a means to estimate distance.

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