Steganography or modern art

[How to put an image into your histogram](http://www.ironicsans.com/2007/09/idea_the_histogram_as_the_imag.html).

This is quite clever, although I’m not sure there are a lot of images that this would work very well for… But is this just ‘hidden art’, or is it actually starting to get in to the realm of cryptography?


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