Contact tracing
Transport secretary says 60% of the population will need to download the app for it to be effective.
NHSX app and 18,000 contact tracers likely to play a key role in easing the lockdown.
The lockdown can't last forever, but easing it will almost certainly lead to more cases.
When it comes to our digital rights, as with so many other things we hold dear, we are balancing on the edge of a precipice, human rights researcher Annina Claesson writes.