Which retail innovation did Barnes & Noble first introduce in the 1990s that revolutionized customer engagement in bookstores?

In the ever-evolving world of book retail, technology and consumer behavior have dramatically transformed how literature reaches readers. From traditional brick-and-mortar bookshops to modern digital experiences, booksellers have pioneered innovative customer engagement strategies. This trivia question explores a significant retail innovation that changed how consumers discover and purchase literature. Test your knowledge of the business side of the literary world!

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In-store cafés with comfortable seating areas for reading
Self-checkout kiosks for faster purchasing
Personalized book recommendation terminals
Book subscription box services