what is a passport book

A passport book is a small booklet available to U.S. citizens and non-citizen nationals that can be used for international travel by air, sea, or land. It contains identifying details such as full name, nationality, date and place of birth, sex, place of issuance, birthplace, issuance and expiration dates, and an alphanumeric eight-digit passport number. The passport book is valid for 10 years for travelers aged 16 or older at the date of issue, and for five years for younger travelers. It contains blank pages for immigration stamps and visas, and can be requested with 28 or 52 pages. Since 2007, only electronic passports have been issued, containing an electronic chip that stores the information on the first page, a biometric identifier of the passport photo, a chip identification number, and a digital signature.