What? Dude I think the script writer for the movie Pi has no idea what stock market is. Theres no such thing such as password in the stock market. Its just a movie concept far behind from the actual world of trading.
Pi movie
http://imdb.com/title/tt0138704/A mathematician try to find stock market key password to make money. A lot of traders think that. Can it be real? Or is it a dream? Is there no stock market key password? Or we couldnt find it yet?