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SecuROM
SecuROM is a CD/DVD copy protection and digital rights management (DRM) product developed by Sony DADC. Its purpose is to resist home media duplication devices, professional duplicators, and reverse engineering of software, primarily commercial computer games running under the Microsoft Windows platform. The method of disc protection in current versions is Data Position Measurement; this may or may not be used in conjunction with online DRM components.
Opponents, including the Electronic Frontier Foundation, believe that fair-use rights are restricted by DRM applications such as SecuROM.〔(Electronic Frontier Foundation's website's DRM section )〕〔Commentary by Fred Lohmann of the EFF, "So this is just another example of the way in which the MPAA companies use DRM not to stop piracy...but rather to control those who make devices that play movies." (emphasis added) ()〕 SecuROM has generated controversy because it is not uninstalled upon removal of the game. A 2008 class-action lawsuit was filed against Electronic Arts for its use of SecuROM in the video game ''Spore''.
==Software==
SecuROM limits the number of PCs activated at the same time from the same key. SecuROM 7.x was the first version to include the SecuROM Removal Tool, which is intended to help users remove SecuROM after the software with which it was installed has been removed.〔(SecuROM Removal Tool Information ) from the SecuROM website〕 Most titles now also include a revoke tool to deactivate the license; revoking all licenses would restore the original activation limit.〔(【引用サイトリンク】title=2.5 What is revoking? )〕 As with Windows activation, a hardware change may appear as a change of computer, and force another activation of the software.〔(【引用サイトリンク】title=2.4 What happens if I change my hardware (e.g. I bought a new graphics card)? )〕 Reformatting the computer may not consume an activation, if the Product Activation servers successfully detect it as a re-installation on the same set of hardware.〔(【引用サイトリンク】title=2.7 I have formatted my PC without revoking the application before, does that mean I have lost an activation? )〕 The activation limit may be increased, on a case-by-case basis, if the user is shown to have reached this limit due to several hardware-triggered re-activations on the same PC.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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