That's not what the "foregone conclusion" stuff is about, at all. They're not saying "it's obvious he's guilty so the 5th amendment does not apply." The 5th amendment doesn't apply to handing over evidence, period. It's about the circumstances under which handing over evidence (which ordinarily does not implicate the 5th amendment) involves implicit statements or assertions by the defendant (which does). Read the subpoena example in the opinion, it clarifies.
The concept of forgone conclusion is very weird. Imagine that I tell someone that I maintain a diary with log of all the events everyday. Then I tell this to my friends, family, (the police), etc.
Let's say the prosecution can prove that I was at a spot where something illegal happened. If they knew I wrote a diary everyday, they can compel me to produce my diary, which will then be used against me (if needed).
If on the other hand, I tell everyone (and the police) that I have photographic memory and remember anything I see and do, that information is protected by fifth amendment. So in this case, I won't provide something that will be used against me.
It is very weird that when the plain words of the amendment read "compelled in any criminal case to be a witness against himself", it is only thought to include literal production of testimony from mind as confession, while on the other hand, the first amendment is not read literally to allow only freedom of (say) owning a press, the press being a physical printing press.
It is also not too hard to essentially forget a complex password by either 'blanking it out', or associating it with multiple similar paswords during recall.
There are no easy solutions to encryption in this context, apart from what it clearly tells us: That society needs to focus on prevention and care, and not rely on policing and punishment to keep society safe as much as now.
Of course, knowing that he actually has forgotten the password is somewhat tricky, so what would actually happen is anyone's guess.
Release him and pay millions in compensation for violating his writ of Habeas corpus.
Surely it's the pre-existing evidence that [potentially] stands against the accused, not their "speech" that enables access to that evidence.
Who does such an interpretation of The Fifth protect?
It amounts to interpreting the existing evidence for law enforcement.
I would like to believe they do... But I don't think they'd bother with that.
I mean 18 months. It's a lot.
The west used to mock and deride the USSR for this kind of thing.
We're starting to get to the edge of the point where this guy might legitimately forget his password. I think we can assume the FBI has been running a common passwords/dictionary attack with common password symbol substitutions for the last 18 months, and apparently they haven't found the answer, so this password is probably a pretty good one that's not based on a word or even a sentence.
If he stays in jail without trial for another two years and then says "I can't remember my password any more", what should we do?