Jisho

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Noun
1. copy protection (for electronic media)From English “copy guard”
Wikipedia definition
2. Copy protectionCopy protection, also known as content protection, copy obstruction, copy prevention and copy restriction, refer to techniques used for preventing the reproduction of software, films, music, and other media, usually for copyright reasons.
Read “Copy protection” on English Wikipedia
Read “コピーガード” on Japanese Wikipedia
Read “Copy protection” on DBpedia
Other forms
コピー・ガード

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