Where is the passport book number and what is the difference from the passport number?
For the US department of state visa application, there is a question about the passport book number, which is apparently different than the passport number. What is that referring to? The explanation in the side bar was not very clear and other searches gave answers that seemed to say it was the same as the passport number.
Update
It would be helpful to have an answer that shows a few example passports from different countries with the book number location marked. I'm also interested in understanding exactly how these numbers are used in correlation with the passport number.
Best Answer
For UK and US passports the book number is the same as the passport number.
For other countries it is not the same thing as your passport number; and you can see in the sidebar - "You may or may not have a Passport Book Number on your passport".
If you have one, it will state so in your passport's identification page (the page with your picture on it); or on the page immediately following it.
It is sometimes called booklet number; as it does on my passport.
Pictures about "Where is the passport book number and what is the difference from the passport number?"
Is Passport Book Number same as passport number?
Sources: Stack Exchange - This article follows the attribution requirements of Stack Exchange and is licensed under CC BY-SA 3.0.
Images: Omar Markhieh, Ahmet Polat, Nataliya Vaitkevich, Nataliya Vaitkevich