Which innovative book packaging design technique, introduced in the early 2000s, is credited with revitalizing the sales of classic literature by using heat-sensitive ink that reveals hidden artwork or text when touched?

In the world of books and literature, packaging design plays a crucial role in attracting readers and conveying the essence of the content within. From dust jackets to special edition designs, publishers invest heavily in creating visual identities that resonate with their target audience. This trivia question explores a groundbreaking packaging innovation that revolutionized how we experience certain literary works.

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Thermochromic cover design
Lenticular motion covers
Die-cut reveal jackets
Augmented reality overlays