CHRIS BISHOP (National): The member might reject it, but I'm just merely quoting both him and Dr Bloomfield, and I think also the Prime Minister, who has said that the Government will be doing a review of MIQ facilities in the light of the Delta variant. But notwithstanding that, can I ask about Bluetooth tracing. We've all been told for many months now, "Turn on your Bluetooth and use it.", and now it turns out in this outbreak that Bluetooth is not being used as part of the contact tracing. I think many people are surprised at that. Why is that the case?