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It already exists: http://en.wikipedia.org/wiki/Steganography#Digital

Unfortunately, it's easy to thwart. (just transform the image slightly)

Not at all. Enough methods, such as spread spectrum watermarking, survive a multitude of digital deformations and 'analog' attacks like printing and physically deforming. Action from 1.30 and German, but the demo is pretty clear. [1]

[1] http://www.3sat.de/mediathek/index.php?display=1&mode=play&o...

I can't watch the video, can you please provide some information/source about the technique.

I saw i paper a long time ago of a stenography quite resistant to transformations so the basic information was still extractable from the picture. Still i think that a photograph of the monitor would remove it.

EDIT: Even a photo filter might not succeed if it did a homogenous effect across the pixels.

I have to find that algorithm someday.

Knowing BuzzFeed, they would probably just apply a photo filter and call it a day.

That doesn't make it any easier to license, does it?

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