Digital Restrictions Management (DRM) or Digital rights management (DRM) tools are a set of access control technologies for restricting the use of proprietary hardware and copyrighted works.
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What is DRM?
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Digital Rights Mismanagement
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Digital Rights Management
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Technological Protection Measures (TPM)
Restricting the use of copyrighted works.
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Oppositions and Shortcomings
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You can not give, lend or resell it
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International effect (e.g. copyright expiration)
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Prevent you from being Free/Evil/Human/Alive
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Security vulnerabilities
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Ownership issue after purchase
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Solution?
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Use DRM-free works (Games, Musics, Books, etc.)
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no DRM or EULA - even for free ($) works
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never use DRM that you can't break