passport

Passport
related: travel

Wikipedia
http://en.wikipedia.org/wiki/Passport_stamp

USA
https://www.usps.com/international/passports.htm

Passport Photo (USA)  Submit a color photograph of you alone, sufficiently recent to be a good likeness of you (taken within the last six months), and 2x2 inches in size. The image size measured from the bottom of your chin to the top of your head (including hair) should not be less than 1 inch, and not more than 1 3/8 inches. The photograph must be in color, clear, with a full front view of your face. The photograph must be taken with a neutral facial expression (preferred) or a natural smile, and with both eyes open and be printed on photo quality paper with a plain light (white or off-white) background. The photograph must be taken in normal street attire, without a hat, or head covering unless a signed statement is submitted by the applicant verifying that the hat or head covering is part of recognized, traditional religious attire that is customarily or required to be worn continuously when in public or a signed doctor's statement is submitted verifying the item is used daily for medical purposes. Headphones, "bluetooth", or similar devices must not be worn in the passport photograph. Glasses or other eyewear are not acceptable unless you provide a signed statement from a doctor explaining why you cannot remove them due to medical reasons (e.g., during the recovery period from eye surgery). Any photograph retouched so that your appearance is changed is unacceptable. A snapshot, most vending machine prints, hand-held self portraits, and magazine or full-length photographs are unacceptable. A digital photo must meet the previously stated qualifications, and will be accepted for use at the discretion of Passport Services. Visit our website at travel.state.gov for details and information.