Every U.S. passport contains a photo of the passport holder, along with his full name, date of birth, sex, place of birth, passport issuing authority, and validity (date of issue and date of expiration, which is 10 years after the issue date for an adult). Non-U.S. passports contain the same information in addition to such things as height, eye color and sometimes religion.
The passport number is the passport holder's identification number and is used for entrance to and exit from foreign countries.
The passport provides space for the holder to write in a personal contact's address and phone number in case of emergency.
Information printed in the passport gives advice to consider before traveling. This includes phone numbers and websites for health and travel information, insurance and safety.
While in a Foreign Country
Printed inside the passport is information that offers helpful hints on how to behave while visiting a foreign country and what to do in case of emergency.
Some countries require a visa from passengers who are traveling to countries for pleasure, work, business or as a volunteer. A visa can sometimes simply be a stamp received in the passport upon entry or it can be an officially issued document with the passport holder's name, passport number and reason for visit.