Which technology was primarily responsible for enabling the checkout-free experience in the original Amazon Go stores when they first launched?

The retail industry has undergone significant transformations with technological innovations designed to enhance customer experience. Among these innovations, some have fundamentally changed how consumers interact with retail spaces. This poll tests your knowledge of a major retail innovation that eliminated one of the most common pain points in shopping experiences. See if you can identify which technology first powered Amazon's revolutionary checkout-free stores.

This is a live public trivia poll on AIPolls.Net. Vote and see real-time results.

RFID tagging on all products
Computer vision and sensor fusion technology
NFC-enabled shopping carts
Blockchain-based inventory tracking