CD/DVD copy protection

CD/DVD copy protection is a set of copy protection mechanisms that prevent users from copying compact discs (CDs) or digital video discs (DVDs). These mechanisms vary widely and include Digital rights management, CD-checks, Dummy Files, illegal table of contents, over-sizing or over-burning the CD, physical errors, bad sectors and more. Many of these protection schemes rely on breaking compliance with the CD and DVD standards, leading to playback problems on some devices.

= Copy protection schemes currently in circulation =

== Commercial CD protections ==

*Alcatraz *Alpha-ROM *CD-Cops *CD-Lock *CD-Protect *CopyLok/CodeLok *CrypKey *DBB *DiscGuard *FADE *HexaLock *LaserLock *LaserLock Marathon *LockBlocks *Phenoprotect *ProtectCD *Ring PROTECH *Roxxe *SafeDisc (versions 1-3) *SafeCast *SecuROM *SecuROM Business Edition *SmarteCD *SoftLock *Star Force *SVK Protector (SVKP) *TAGES *The Copy-Protected CD *The Bongle

== Commercial DVD Protections ==

*Alpha-DVD *DVD-Cops *SecuROM *SafeDisc (version 3) *Sony ARccOS *TAGES

== Commercial Audio CD/DVD Protections ==

*Alpha-Audio *Cactus Data Shield *Key2Audio *MediaCloQ (versions 1 and 2) *MediaMax CD3 *MusicGuard *SAFEAUDIO

== Console CD Protections ==

*Sega DreamCast GD-ROM *Sony PlayStation CD-ROM

= External links =

*[http://www.cdmediaworld.com/hardware/cdrom/cd_protections.shtml CDMediaWorld s CD protection page]