Quote:
Originally posted by kjanx
those lines are put there by the owner of the photos to prevent copying.
I highly doubt that. Although the technology does exist (for many many years now alteady) but its deployment requires printing on specialty copy-protected papers. These papers are expensive. Technologies vary but most incorporate a transparent layer invisible to naked eye which contains material that deflect scanning light from scanners and copiers such that the only thing that you will get is simply random patterns or highly distorted pictures. Ordinary newspapers and magazine will not be using these expensive papers.