Encrypt everything. We know they keep copies of encrypted data for a long time hoping for the day that breaking the encryption becomes easy for reading later. In the meantime, flood everything with mundane data, but encrypted. Make it expensive for them to keep it all, and the an absolute waste of time when they do get it decrypted.

Throw in some legitimate random data to really mess with them. Everybody needs some good entropy seed material.

> I'd refuse to disclose any private info up until the law requires me to.

This doesn't work as well as you'd expect.

I know Queensland law requires you to unlock your phone for a cop, or you face prison time. I'd expect there's similar laws for disclosure of encryption keys.

I don't know if I'm willing to "make it hard for them" if that means facing jail time.

This is true in relation to a search warrant afaik:

https://www.hallpayne.com.au/blog/2019/january/mobile-phone-...

>Judge North’s comments do make it clear, however, that if you answer questions where you acknowledge ownership of a mobile phone, then there is a potential for self-incrimination.