Digital Rights Management
Digital Rights Management (DRM) refers to a variety of techniques designed to prevent computerized devices from obeying the wishes of their owners and users, in favor of the wishes of those who created the hardware, software, content, or services used by those devices.
Some forms of DRM are known as copy protection.
Modern DRM schemes usually involve encryption.
Some critics of DRM call it Digital Restrictions Management.
- Wikipedia: Digital rights management
- Wikipedia: Copy protection
- Write-ups from 4am's best of - Accounts of cracking copy-protected Apple II software. (From the "TEXT" documents at the 4am Collection.)