Which retail technology advancement had the greatest impact on expanding global access to religious texts in the 21st century?

The market for religious goods and spiritual products has undergone significant transformation in the digital age. From prayer beads to sacred texts, meditation apps to virtual pilgrimages - the way people consume religious products has evolved dramatically. This trivia question focuses on a pivotal retail technology advancement that revolutionized how spiritual and religious products reach consumers worldwide. Test your knowledge of the intersection between faith commerce and technological innovation!

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Print-on-demand technology allowing sacred texts to be produced in multiple languages with minimal inventory
QR code integration linking physical religious artifacts to digital content explanations
RFID tagging systems for authenticating genuine religious relics and ceremonial objects
Augmented reality experiences for virtual tours of religious sites and monuments