[maurits]

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...

[deletes]

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