Copyright Management and Control Systems: Post-Infringement Post-infringement technologies allow the owners of copyrighted works to identify infringements and thus enhance enforcement of intellectual property rights and encompass systems such as: Steganography Applied to electronic files, steganography refers to the process of hiding information in files that can not be easily detected by users. Steganography can be used by intellectual property owners in a variety of ways. One is to insert into the file a "digital watermark" which can be used to prove that an infringing file was the creation of the copyright holder and not the pirate. Other possibilities are to encode a unique serial number into each authorized copy or file, enabling the owner to trace infringing copies to a particular source, or to store copyright management information. Agents Agents are programs that can implement specified commands automatically. Copyright owners can use agents to search the public spaces of the Internet to find infringing copies. Although the technology is not yet very well developed full-text search engines allow similar uses. Copyright Litigation While not every infringement will be the subject of litigation, the threat of litigation helps keep large pirate operations in check. It helps copyright owners obtain relief for specific acts of infringement and publicly warns others of the dangers of infringement.

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Missing Labeling of Online Ads One of the most crucial issues in on-line advertising is the blurring of the line between editorial content and ads. Unlike on TV and in the print media, where guidelines on the labeling of advertisements, which shall enable the customer to distinguish between editorial and ads, exist, similar conventions have not yet evolved for Internet content. Labeling of online advertisement up to now has remained the rare exception, with only few sites (e.g. http://www.orf.at) explicitly indicating non-editorial content.

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Technological measures As laid down in the proposed EU Directive on copyright and related rights in the information society technological measures mean "... any technology, device, or component that, in the normal course of its operations, is designed to prevent or inhibit the infringement of any copyright..." The U.S. DMCA (Digital Millennium Copyright Act) divides technological measures in two categories: 1) measures that prevent unauthorized access to a copyrighted work, and 2) measures that prevent unauthorized copying of a copyrighted work. Also the making or selling of devices or services that can be used to circumvent either category of technological measures is prohibited under certain circumstances in the DMCA. Furthermore the 1996 WIPO Copyright Treaty states that the "... contracting parties shall provide adequate legal protection and effective legal remedies against the circumvention of effective technological measures that are used by authors..."

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William Gibson American science fiction author. Most famous novel: Neuromancer. For resources as writings and interviews available on the Internet see http://www.lib.loyno.edu/bibl/wgibson.htm

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