Which innovative retail technology was FIRST successfully implemented at a major sports stadium to eliminate checkout lines?

Modern sports venues are becoming increasingly sophisticated with cutting-edge retail technology. From cashierless stores to biometric payments, technology is transforming how fans experience game day purchases. Test your knowledge about the latest advancements in stadium retail technology that are reshaping the sports business landscape and enhancing the fan experience.

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Amazon Just Walk Out technology (computer vision and sensor fusion)
Facial recognition payment systems (FacePay)
RFID-enabled smart shopping carts
Blockchain-based digital wallet verification