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CD Media World - Commercial CD/DVD Protections: Key2Audio

    https://www.cdmediaworld.com/hardware/cdrom/cd_protections_key2audio.shtml
    In addition, a CD protected with key2audio still guarantees a maximum playing time of 77 minutes and therefore does not limit the pleasure of listening time at all. Full ISRC, UPC, CD Text capabilities are supported. The key2Audio work on most CD Readers but on a few (more expensive) readers they fail to work.

Sony's latest CD copy protection comes unstuck | New …

    https://www.newscientist.com/article/dn2294-sonys-latest-cd-copy-protection-comes-unstuck/
    Sony’s key2audio is one type of copy protection and is designed to stop music discs playing in PC and Mac CD-ROM drives. Each protected disc comes with the warning: “Will not play in Mac/PC”. Most...

Michael Jackson protects radio single - CNET

    https://www.cnet.com/tech/services-and-software/michael-jackson-protects-radio-single/
    Key2Audio is one of several copy-protection schemes Sony is testing. The company added, however, that it does not have plans to …

Felt-tipped markers may threaten CD copy ... - …

    https://www.computerworld.com/article/2575778/felt-tipped-markers-may-threaten-cd-copy-protections.html
    Key2Audio is a special copy-protection technology used by Sony on music CDs sold in Europe, the spokeswoman said. According to the newsgroup listings, a Key2Audio-protected CD can be "unlocked" and...

Crack CD Copy Protection? All You Need Is A Marker – The ...

    https://www.macobserver.com/tmo/article/Crack_CD_Copy_Protection_All_You_Need_Is_A_Marker
    According to a Reuters story at the New Zealand Heraldis Web site, Sonyis Key2Audio CD protection technology has been cracked. The technique, described in the article, involves the use of a...

Sony’s CD protection method foiled with a felt tip pen ...

    https://www.berkeleydailyplanet.com/issue/2002-05-31/article/12308
    Sony’s recent European CD releases from artists such as Celine Dion, Shakira and Jennifer Lopez contain Sony DADC’s copy-protection method, marketed as key2audio. The system normally prevents users from ripping CD tracks to MP3 files by placing a small bit of computer data on the disc during the process of making the glass master CD.

Yamaha CRW-F1 - Page 11 of 15 - Myce.com

    https://www.myce.com/other/Yamaha-CRW-F1-24/11/
    The first protection we’re going to take a look at is Key2Audio developed by Sony DADC. The disc we’re using is ‘Shakira: Laundry Service’ protected with version 2 of the Key2Audio protection. On...

CDs or not? An interesting take on Key2Audio - Slashdot

    https://apple.slashdot.org/story/02/05/30/137233/cds-or-not-an-interesting-take-on-key2audio
    Erik K. Veland writes "Mathew Ruben of MacOpinion has written a long article titled Celine Dion killed my iMac!. An interesting take on the whole CD-issue, the criminalization of the user and a comparison of the technology to cable box-zapping."...

Can you violate copyright law with a Magic Marker?

    https://slate.com/news-and-politics/2002/06/can-you-violate-copyright-law-with-a-magic-marker.html
    Since Key2Audio was designed to prevent piracy, the Magic Marker trick qualifies as such a measure. Yet most hackers needn’t fear the DMCA’s stiff criminal penalties, which include up to 10 years...

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