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They want a practical way to make copying hard enough to save their existing business. But they are doomed to fail." [139] He described trying to make digital files uncopyable as like "trying to make water not wet". [140] The creators of StarForce stated that "The purpose of copy protection is not making the game uncrackable – it is ...
A portion of the disclosure of this patent document contains material which is subject to (copyright or mask work) protection. The (copyright or mask work) owner has no objection to the facsimile reproduction by anyone of the patent document or the patent disclosure, as it appears in the Patent and Trademark Office patent file or records, but ...
PDF files may be digitally signed, to provide secure authentication; complete details on implementing digital signatures in PDF are provided in ISO 32000-2. PDF files may also contain embedded DRM restrictions that provide further controls that limit copying, editing, or printing. These restrictions depend on the reader software to obey them ...
To provide that incentive, these works, if published before 2003, would not have their protection expire before 2048. [48] All copyrightable works published in the United States before 1930 are in the public domain; [48] works created but not published or copyrighted before January 1, 1978, may be protected until 2047. [49]
Technological measures shall be deemed 'effective' where the use of a protected work or other subject matter is controlled by the rights holders through application of an access control or protection process, such as encryption, scrambling or other transformation of the work or other subject-matter or a copy control mechanism, which achieves ...
PDF files that have been converted to the DRMX and DRMZ formats (using the free DrumlinPublisher software) can be protected against printing, or printing can be permitted with limits to the number times printed/pages printed, copying is disabled, date expiry of PDF files is provided (in two ways), limits on the number of times a file can be ...