The analog hole is a fundamental and inevitable vulnerability in copy protection schemes. Once digital information is converted to a human-perceptible (analog) form, it is a relatively simple matter to digitally recapture that analog reproduction in an unrestricted form, thereby fundamentally circumventing any and all restrictions placed on copyrighted work.
Media publishers who use digital rights management (DRM), to restrict how a work can be used, perceive the necessity to make it visible and/or audible as a ‘hole’ in the control that DRM otherwise affords them.
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The Daily Omnivore 