I once read a suggestion that in addition to carrying a photocopy of passport (for those that go that route) one should scan the document and email it to themselves. Well, provided they use a web based email system. Myself, I have Google Docs, so my JPEGs of my passport and driver's license sit there. Worst case scenario, most places in the world you are going to be able to get some kind of internet signal enough to retrieve the file.
Disney Dream - Dec 2012 4n Bahamas
Carnival Imagination - Dec 2011 4n Western
Carnival Imagination - Nov 2010 4n Western
Costa Atlantica - Dec 2009 7n Eastern
My opinions are mine and mine alone. They do not represent the opinions of The Walt Disney Company nor any of its subsidiaries.