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LaserLock is a CD-ROM copy restriction technique. It works by including a hidden directory on the CD which contains corrupted data. When the disk is copied, the read device encounters errors due to the hidden directory.[1]


  1. ^ "The Dark Art of Game Backups". Maximum PC (Future US, Inc.) 6 (1): p. 62. January 2001. ISSN 1522-4279. 

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