Editing Copyright (section)

=== Self-enforcement measures ===
	
With older technology like paintings, books, phonographs, and film, it is generally not feasible for consumers to make copies on their own, so producers can simply require payment when transferring physical possession of the storage medium. The equivalent for digital online content is a [[paywall]].
	
The introduction of the [[photocopier]], [[cassette tape]], and [[videotape]] made it easier for consumers to copy materials like books and music, but each time a copy was made, it lost some fidelity. Digital media like text, audio, video, and software (even when stored on physical media like [[compact disc]]s and [[DVD]]s) can be copied losslessly, and shared on the [[Internet]], creating a much bigger threat to producer revenue. Some have used [[digital rights management]] technology to restrict non-playback access through encryption and other means. [[Digital watermark]]s can be used to trace copies, deterring infringement with a more credible threat of legal consequences. [[Copy protection]] is used for both digital and pre-Internet electronic media.