Which retail technology innovation was first introduced by Amazon in their Amazon Go stores and has since been adopted by various retailers worldwide?

The retail landscape is constantly evolving through technological innovation. From contactless payments to AI-powered shopping assistants, technology has dramatically transformed how businesses operate and how consumers shop. This trivia question challenges your knowledge about a groundbreaking retail technology that has significantly impacted the industry's efficiency and customer experience in recent years.

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Just Walk Out technology (cashierless checkout using computer vision and sensor fusion)
Smart shopping carts with built-in scanners and payment systems
Facial recognition payment systems that automatically charge customers upon entry
Holographic product displays with interactive purchasing capabilities