“Instead, during trial, the prosecution offered testimony and argument about his refusal. The defense argued that this violated the defendant’s Fifth Amendment right to remain silent, which also prevents the state from commenting on his silence. The court of appeals agreed, and now the state has appealed to the Utah Supreme Court.”
In that text, “prevents the state from commenting on his silence” is a link to https://supreme.justia.com/cases/federal/us/380/609/
Not a lawyer but I think a future defense attorney with a client in a similar situation in a another state would reference this ruling and try to convince a judge that their client’s situation was similar enough to invoke that ruling, whereas a prosecutor would be making the case that it was different enough that it did not apply (vs saying that it was a different jurisdiction and did not apply).
Note that a defendant is in a much stronger position if they have maintained complete silence even before the password is requested - you can't just clam up halfway through a conversation.
You certainly can.
Why?
> If you decide to answer questions now without a lawyer present, you have the right to stop answering at any time.
If the questioning goes from "what's your name, what's your job, where do you live" to "why did you murder so-and-so", you're allowed to invoke the Fifth there, even if you answered the innocuous questions earlier.
At trial, you can't start testifying on your own defense and invoke the Fifth part way through, but you can during police interrogation. https://www.findlaw.com/criminal/criminal-rights/fifth-amend...
"Once the defendant takes the witness stand, this particular Fifth Amendment right is considered waived throughout the trial."
(Witnesses have full Fifth Amendment protections while testifying, oddly enough. The above is specific to a) trial and b) the defendant)