Which innovative product design approach revolutionized children's literature in the early 2000s, leading to a 43% increase in engagement among reluctant readers?

The publishing industry has undergone significant transformation in how books are designed and marketed. Product design in literature isn't just about beautiful covers anymore—it encompasses the entire reading experience from physical attributes to digital interfaces. Test your knowledge about how product design has evolved in the literary world and how it impacts reader engagement and sales.

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Interactive augmented reality (AR) components that brought illustrations to life when viewed through smartphone apps
Customizable choose-your-path narratives with multiple physical page configurations
Tactile elements including textured pages, pull tabs, and embedded sound modules
Glow-in-the-dark ink technology that revealed hidden story elements when read in darkness