大約半年前寫的「使用浮水印取代 DRM」看到音樂產業決定要使用了 (Digital Watermarks to Replace DRM)，但是有幾個問題要考慮：
- 浮水印演算法本身是不是有公開？如果沒有公開，上法院後要如何證明給法官看？
- 浮水印破壞音質的情況如何？能抵抗的程度如何？
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