Hon CHRIS HIPKINS: In the early days after the last lockdown was ended, there were a number of different tracing applications that were being used by people, and we've been working to improve the quality of the Government's COVID Tracer app so that we can have a standard system. One of the things that we've been working through is making sure that businesses only need to display one QR code, even if people are using a different tracer app, and that has involved working with other providers of tracer apps to make sure that the QR codes that we supply can be the one and only code that businesses need to display. We were able to conclude that work, and, actually, businesses have welcomed that because it means less compliance for them and the need to display multiple codes is reduced. 