Comment by flavio81

Yes, this has been for ages, but I never saw an explanation on how to read the dots. I thought they were to be more subtle or more concealed, but they are very evident!!

As pointed out, probably there is more steganography being put into devices / software by the NSA/etc (tinfoil hat nonwithstanding); that will probably insert things like meaningful whitespace with information about the source.

The article is also very relevant because we do need tools free from such fingerprinting. It makes me want to use only and only open source for all my documents. Even for file storage!