"It is a tax code that makes it all too easy for a small number of individuals and companies to abuse overseas tax havens to avoid paying any taxes at all,"
VOA: standard.2009.05.04
The use of acodenumber to access the images protects a traveller's privacy, shielding the photos from the public eye.
In a digital twist, tourists receive a card with acodenumber on it, and later, they can view the images online and decide if any of the prints are worth purchasing.