Which major bookstore chain first implemented widespread AR technology that allowed customers to point their phones at book covers to see author interviews and reviews?

The intersection of literature and technology has transformed how we discover and experience books. Major bookstore chains and independent shops have been experimenting with augmented reality (AR) to enhance the customer experience and create immersive literary environments. This trivia question explores how the book retail industry has adopted AR innovation to bridge physical books with digital experiences, creating new ways for readers to engage with literature and authors.

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Barnes & Noble (with their 'B&N Readouts AR' program in 2018)
Waterstones (with their 'Literary Lens' feature in 2017)
Books-A-Million (with their 'BAM! Beyond the Page' app in 2019)
Powell's Books (with their 'Powell's Portal' technology in 2016)