" They cannot ask for the password if the folder does not exist and cannot be seen."
...no but the handy little USB flash-drive that has software developed by a very nice company in the U.S for the U.S Government does make everything visible...
...And don't zip your files either they make you open them
...and don't turn up with a Mac that just screws with their heads big time and makes them vanish into the back room for two hours while they have a really good root through it.
...Guys take this very seriously as they quite simply take whatever they take offense to off you... do you really want:
a) a Saudi government official to keep your laptop with everything on it? because the contents will be read and distributed.
b)be in Saudi without your laptop... you know it's such a fun place to be.