The Privacy Amendment (Public Health Contact Information) Act 2020 amended the Privacy Act 1988 to create a dedicated set of rules for the COVIDSafe app. The legislation inserted Part VIIIA into the Privacy Act and set out offences, handling rules, deletion requirements and privacy enforcement mechanisms for "COVID app data".
The object of the Part was to help prevent and control the spread of COVID-19 by giving stronger privacy protections to COVIDSafe users and their data. The legislation expressly linked those protections to encouraging public acceptance and uptake of COVIDSafe and enabling faster and more effective contact tracing.
This was not a broad rewrite of Australian privacy law. It was a targeted regime for a particular Commonwealth app and the data collected or generated through that app.