Earlier quoted context omitted.
They can't require you to personally admit to it, but if they know about a notebook where you wrote it they can require you to give up the notebook. (The rule makes more sense if you think about it in terms of financial crimes; it'd be hard to ever prosecute someone for fraud if they didn't have to give up their books.)
> it'd be hard to ever prosecute someone for fraud if they didn't have to give up their books. I'm pretty sure it's relatively simple for police to break into offices and take financial records. I would imagine it happens relatively often, because simply asking a suspect to give up their books seems more likely to result in them attempting to hide or destroy their books. The reason police and prosecutors don't like e…
No, this requires a warrant in the US for it to be lawfully used as evidence.
It's worth noting that the defendant in question was told to unencrypt the devices by the courts, which is pretty much in effect the same thing as a warrant, so it's not as if the government was torturing him to decrypt the data; the court had already decided it was material evidence in a case.