Thanks very much.
I'd like to change tack a little bit and focus on digital proximity tracing.
Laura, I understand OpenMedia, alongside the BCCLA and some other privacy and civil liberties focused organizations, released a statement of principles in relation to digital proximity tracing. I also understand that, today, privacy commissioners jointly released a similar statement about principles. I agree with almost everything in those documents, but I do wonder a little bit about the importance of voluntariness. I say that despite the Prime Minister indicating that voluntariness was critically important too, to build trust in these applications.
My challenge, and I wonder how you would respond to this challenge, is on the question of efficacy when we see that adoption rates are so low. We've seen 20% adoption rates in other countries, for example, that have a voluntary system. That adoption rate is not going to be effective. We've seen research out of Oxford that suggests a 60% national adoption rate is sort of a standard that one would look to, to say that would be effective.
Do you see a way to overcome that challenge, and to ensure there are adoption rates in a voluntary system?