A mishmash of all different private organisations collecting collecting a lot more data that that required by the Health Dept.
Some worked some didn't.
Funny that there is a lot of people called Micky Mouse living in Oz.
Here in the UK we use the NHS app to check in to places/venues. Takes less than 2 seconds and it’s anonymous. You download the app switch on bliuetooth and off you go. You don’t need to register or anything. When you go somewhere you open the app tap “check in to venue” scan QR code and your done. You can then get an alert on your phone telling you that you have been in contact with someone who has subsequently tested positive, and you must isolate. That’s the end of it. It leaves it up to the user to comply or not.