DRM is a term for access control technologies that are used by hardware manufacturers, publishers, copyright holders, enterprises and individuals to limit the use of digital content and devices. The term has taken on at least two meanings. One refers to technology that support the 1998 Digital Millennium Copyright Act to protect copyrighted media, maintain royalties, and ensure artistic control. The other meaning refers to enterprise rights management technologies that attempt to put security controls closer to the enterprise data itself often in the form of encryption and metadata that carries access control information.