Whole you're looking, check out the digital identity act which completely contravenes the referendum we had (in the ?80's) which voted against having a national identity card.
Whilst I am not super keen to have a national identity card, the Australian government has effectively linked all this info together already, with agencies cooperating.
Also, I'm not sure that a referendum held 35 years ago really means very much. In that time the population has grown from 16 million to 26 million, and many of the people who voted in the referendum would no longer be alive.
This is news to me, out here on the West coast. Might have to look into that!