I've tracked down the Public Health Order, updated on 20/11 to reflect the recent changes. It's a PDF
https://www.legislation.nsw.gov.au/f...020_201123.pdf
Note
Part 3 Records and exchange of information on page 18 and
Schedule 3 Premises requiring electronic entry records Item 4, 17 and 18 on page 25.
Part 3, 28(1) wording implies that a person might be in breach if not providing contact details and is on the premises but I've yet to track down any penalty associated with it (or anything else for for that matter).
As for the people able to access and/or collect this data the PHO allows for the following (Part 3, 29, 2(2)). Drilling down it appears that the following agencies can get it:-
(a) the Public Service,
(b) the Teaching Service,
(c) the NSW Police Force,
(d) the NSW Health Service,
(e) the Transport Service of New South Wales,
(f) any other service of the Crown (including the service of any NSW government agency),
(g) the service of any other person or body constituted by or under an Act or exercising public functions (such as a State owned corporation), being a person or body that is prescribed by the regulations for the purposes of this definition.
The statement that only the Health Department will have access appears to be a blatant lie and effectively allows free exchange to any government department.
I doubt this will ever go away, they'll make every excuse to keep it in place and after a while the public will get so used to it that it'll become second nature.
A golden egg from a golden goose and all the ducks are lining up.