Hon CHRIS HIPKINS: The better the records people have of their movements, the faster that we can get in contact with all the people they've been in contact with. But I'd also point out that one of the things that we have been very clear about is that by registering for the COVID Tracer app, the Ministry of Health gets people's up-to-date contact information, and that's actually one of the most important steps in the process. It can slow down the contact tracing process considerably if we can't get hold of people. 