Investigators followed the trail of unique disc identifiers called watermarks and convicted two men of felony copyright infringement.

调查人员通过独特的影碟水印标识进行了追查，并宣判两人因侵犯版权获重罪。

youdao

"Investigators followed the trail of unique disc identifiers called watermarks and convicted two men of felony copyright infringement."

调查人员通过独特的影碟水印标识进行了追查，并宣判两人因侵犯版权获重罪。

youdao

When phase two kicks in, probably next year, music companies will insert digital signatures called "watermarks" into the music files themselves to prevent unauthorized copying.

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