When you travel outside the U.S, some people recommend you keep a copy of your passport in a separate location, such as your luggage or wallet. This way, if your passport is ever lost or stolen, you have a copy to provide officials. Instead, or in addition to, consider scanning a copy of your passport and saving into your email box or other online file server. A scanned copy is crisp, clean and colorful, and looks pretty legitimate (although it is still just a copy). Plus, you have a copy of your passport anywhere in the world you may be, provided there is Internet access to retrieve it.