There is an iPhone app called "Photographers Rights" that can help photographers to know their rights in different countries (Legal rules for USA, Australia, Canada, UK, Japan, Spain, Italy, France.)
The app explains what can be and can not be done, what is legal and illegal. What are your rights, how should we behave in case to be approached by an police officer and so forth. It also provides common questions in French, Japanese, Spanish, Catalan, Italian that can be played using the iPhone speaker. So a photographer that doesn't understand the language of a specific country, can still ask common questions using the iPhone.
It's available in the iTunes Store, search for Photographers Rights, it costs $1.99