Quotes.  1 That's my child! My property! (To Angharad)  2 Do not, my friends, become addicted to water, or it will take hold of you and you will resent its absence!.  3 Mediocre!.  4 Return my treasures to me, and I myself will carry you through the gates of Valhalla. You shall ride eternal. Shiny, and chrome. (To Nux)
While most U.S. Passport numbers are nine digits and most U.S. visa numbers are eight digits, some are not. Last year, we implemented a workaround for entering document numbers that do not fit the usual pattern. That workaround is no longer necessary as we have implemented a permanent fix as part of our June 2011 upgrades.
The passport number is also used to confirm your identity when you apply for a visa or even a job. When you use your passport as a piece of identification for tax or employment purposes, that passport number is used to verify your citizenship or immigration status.