This is for sure embedded watermarking but I'm not seeing active surveillance in this (unlike, say Kindle or the myraiad of phone-home technologies).
While I would strongly prefer Free Culture media where there is permission granted for distribution, modification, attribution mandates, and redistribution, if the media is DRM-free but does not permit widespread distribution, what mechanisms do you see as appropriate for the copyright holder to use to identify unauthorized distributed copies?
@serge @jonny
They could easily use this to track who is uploading papers to shadow libraries and slap them or their institutions with huge lawsuits.
For-profit publishing has no place in modern #academia.