Which retail technology has most significantly increased sales of religious and philosophical texts in the last decade?

Technology is transforming how religious and philosophical products are marketed and sold. From sacred texts to meditation aids, the retail landscape for spiritual goods has evolved dramatically. This poll tests your knowledge about the intersection of modern retail technology and the religion & philosophy marketplace. Can you identify which innovative approach is making the biggest impact on how people discover and purchase items for their spiritual practice?

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AI-powered recommendation engines that suggest spiritual texts based on a customer's previous readings and stated beliefs
RFID tagging systems that allow customers to scan religious items in-store to access testimonials and usage instructions
Augmented reality apps that let customers visualize religious artifacts and meditation spaces in their homes before purchasing
Blockchain verification systems that authenticate rare religious manuscripts and philosophical first editions