A 'thorn' in the administration of the general population in Australia is something called cash.
In order to give this tool that allows privacy the flick, the administration of Australia is in full swing under whatever excuse to do so.
Privacy (of the general population) is not what the Australian Government is about, after all why would you if you're in a penal colony.
The first stage is welfare, as they are the first people that are literally 'owned' by the government.
Here is one implementation of going cashless, as reported on 21 Jun 2018 by 9news.com.au of the headline: