Which retail innovation first allowed customers to search the full text of religious scriptures and philosophical works before purchasing?

The market for religious and philosophical texts has evolved dramatically in recent decades, with innovative retail strategies transforming how spiritual seekers access ancient wisdom. From traditional bookstores to digital platforms, companies have developed unique approaches to marketing these profound works. Test your knowledge about a significant retail innovation that changed how people interact with sacred and philosophical texts.

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Amazon's 'Look Inside' feature (1998)
Barnes & Noble's 'Scripture Kiosks' (1995)
Google Books' religious texts scanning project (2004)
Apple's iBooks religious collections (2010)