Unrelated but there is a similar case going on in the EU right now that is set to be appealed at the European Court of Human Rights. Last week the highest court of Belgium ruled that passwords to IT systems were not covered by the right not to incriminate one-self. And they also ruled that you could be jailed for up to 3 years for refusing to provide said passwords. This was in the case of an alleged drug dealer refusing to unlock his iphone. There is no appeal left for him at the national level and he's now set to appeal the decision at the ECHR which if not overruled might finally set the precedent for the whole EU.