Which innovative e-commerce feature did Catholic online retailer 'Sophia Institute Press' introduce in 2019 that led to a 40% increase in customer retention?

Religious goods and philosophical texts represent a growing niche in e-commerce. From prayer beads to meditation cushions, sacred texts to spiritual retreats, the way people shop for items related to their spiritual practice has evolved dramatically in the digital age. This trivia question explores how one major religious retailer adapted to changing consumer trends in the online marketplace.

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Virtual reality church tours with integrated product placements
Subscription box service delivering curated spiritual reading materials monthly
Blockchain-based authentication system for verified religious relics
AI spiritual advisor that recommends products based on faith journey