Sounds like Murakami's "Hard-Boiled Wonderland and The End of The World". Even so, you can give the password by playing the game, which is why I would prefer t

Sounds like Murakami's "Hard-Boiled Wonderland and The End of The World". Even so, you can give the password by playing the game, which is why I would prefer to keep it in some form even I can't read and which is easy to be accidentally destroyed by the police when they seize your stuff.