Which innovative music product packaging feature was introduced in the early 2000s specifically to combat piracy and unauthorized copying?

The music industry has undergone dramatic changes in how its products are packaged and delivered to consumers over the decades. From vinyl records to digital streaming, packaging has evolved both functionally and aesthetically. This trivia question explores an innovative packaging development that changed how consumers interacted with music products and helped combat a significant industry problem.

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Copy Control technology that limited the number of times CDs could be ripped to computers
Heat-sensitive album covers that revealed hidden artwork when touched
Biodegradable CD cases that dissolved after 5 years to encourage repurchasing
RFID chips embedded in vinyl records to track resale in second-hand stores