I'd argue that people are far more likely to forget a password/passcode than to have dissociative personality disorder and then have only one personality be awa

I'd argue that people are far more likely to forget a password/passcode than to have dissociative personality disorder and then have only one personality be aware of the password and then also be cured of the disorder/personality or otherwise be unable to ever manifest that personality to allow for questioning by police. I think in that case it'd probably be treated more or less the same. Jailed for months/years for contempt of court, either locked up in a cell or a hospital with court ordered mental health treatment depending on if the judge believes the person actually has the disorder or not.