> Intentions matter
Fed: "give us your PIN or else"
me: "528491"
Fed: <types 528491, presses OK>
me: "no! 528419, I meant 528419!!"
Fed: <watches phone wipe...>
>"write the pin on a piece of paper"
>"ok are you sure that's your pin?"
>they exit the room and come back 5 min later
>"that pin didn't work, can you write it again?"
You're going to have a hard time convincing the judge that you "accidentally" gave the wrong pin in this case.
You could still be brought before a jury to determine if you knowingly provided the wrong PIN (and thus knowingly gave false testimony) or not. Records of you intentionally setting two very similar PINs and discussing any such plan could be used to convince a jury that it was malicious.