>"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're going to have a hard time convincing the judge that you "accidentally" gave the wrong pin in this case
Counter-example: muscle memory.
My OH has - more than once - attempted to tell me her PIN code. On more than one occasion two of the digits have been transposed. Happily I know that it's the middle two digets that get transposed... :)