I wonder what would happened if you willingly keep providing a wrong password. The possibility of your device malfunctioning IS and always will be > 0.
Can the judge really throw you, and re-throw you multiple times to jail because the password you keep providing did not work?
In the UK the Regulation of Investigatory Powers Act (RIPA) makes it a criminal offence to not divulge a password if compelled via a RIPA notice.
https://www.legislation.gov.uk/ukpga/2000/23/section/53