I remember when I was using a version of OS9 four years ago, Apple had an option to record your voice to be set as a password upon logging onto your computer. Albeit it wasn't perfect and often I found myself repeating my password over and over again before it finally accepted it, I thought it was a cool feature. I always wonderedwhy Apple ditched this when it released OSX. It certainly made for amusement when a buddy of mine, whilst in a drunken stupor sat in front of my computer yelling the password. 