But digital watermarks may find a legal role that has nothing to do with copyright.
It will include images with paper sizes, watermarks and other descriptive features recorded.
In addition, unique watermarks in films are able to pinpoint which specific theaters are bringing in pirates and their small camcorders.
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The Fed has reissued what currency collectors call the "big-headed" bills, complete with magnetic stripes and watermarks, the better to foil counterfeiters.
Hackers doing it for real would, if the use of such watermarks became widespread, have access to a large number of files for comparison.
In these days of easy fakes, pictures from police cameras or interview recordings could have watermarks put in that are fragile rather than robust.
When phase two kicks in, probably next year, music companies will insert digital signatures called "watermarks" into the music files themselves to prevent unauthorized copying.
Thanks to embedded audio watermarks syncing everything up, they will also work with last week's episode (and future ones going forward) viewed on iPlayer or home recordings.
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Called "The Watermark Drive, " because its contents are stamped with watermarks to protect them from piracy, the file is spoken of at NPR as if it were a sacred vessel.
If digital watermarks can be detected, however as is necessary for them to work at all then it seems inevitable that somebody will be able to find a way of removing them.
But, if these runors come to nothing, the game will still be there, lovingly patched and polished by its army of fans, as one of the high watermarks of temperamental but transcendental PC gaming.
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