Which innovative book packaging technique was first introduced by publisher Dorling Kindersley in the 1990s and revolutionized non-fiction publishing with its visual approach to information?

In the publishing world, packaging isn't just about protection—it's about creating an experience that draws readers in before they've read a single word. From interactive covers to sustainable materials, publishers are constantly innovating to make physical books stand out in an increasingly digital world. This poll tests your knowledge of a groundbreaking packaging innovation that changed how we experience certain literary works.

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The 'eyewitness' visual format with integrated photography, illustrations and text on white backgrounds
Heat-sensitive covers that reveal hidden text or images when touched
Augmented reality markers embedded in book covers that activate digital content
Biodegradable seed-infused book jackets that can be planted after reading