This is really about how to ensure they can’t unlock your phone even if they have a warrant. They can’t physically force you to give them the right code. SO they have to buy expensive software to clone the phone and try various passwords on the clones.

You won’t have the time or ability to do this when the police are involved. DON’T USE IT. It’s not secure.

And this only makes it more expensive and time consuming to unlock. So if you’re small fry, they won’t waste the resources. But if you are a “person of interest” don’t be dumb, bring a burner phone.

Before the police pull you over?

This isn’t new. This can also be compelled by the courts. If you want your phone secure, don’t have one. If you want it to be expensive to open, use a long passcode, do NOT use fingerprint or face unlock.