drm

Digital Rights Management (generally abbreviated to DRM) is any of several technologies used by publishers (or copyright owners) to control access to and usage of digital data (such as software, music, movies) and hardware, handling usage restrictions associated with a specific instance of a digital work. The term often is confused with copy protection and technical protection measures (TPM). These two terms refer to technologies that control or restrict the use and access of digital media content on electronic devices with such technologies installed, acting as components of a DRM design.
Digital Rights Management is a controversial topic. Advocates argue DRM is necessary for copyright holders to prevent unauthorized duplication of their work to ensure continued revenue streams.Some critics of the technology, including the Free Software Foundation, suggest that the use of the word "Rights" is misleading and suggest that people instead use the term Digital Restrictions Management.The position put forth is that copyright holders are attempting to restrict use of copyrighted material in ways already granted by statutory or common law applying to copyright. Others, such as the Electronic Frontier Foundation consider some DRM schemes to be anti-competitive, citing theitunes store as an example.
So drm affects more those who pirate media, than the legal users, that’s why it is used as a way to fight pirates, even it they always find others way to turn beyond legacy.