There’s always package forwarding. I’m about to find out how bad an idea that is.

https://www5.austlii.edu.au/au/legis/cth/consol_act/ca191482/s3la.html

It does require a court order, but notably you do not need to be suspected of a crime.

Dont we have a right […] to not self incriminate?

Not that I’m aware of, but if you find otherwise, let me know!

They can compel you to reveal your password without a warrant but can’t touch your phone? Is that a state law?

This is exactly what DMCA was made to do.