Which retail technology innovation, first implemented at scale by Amazon in 2018, allows customers to shop without going through traditional checkout lines?

In the ever-evolving world of retail, technological innovations have dramatically transformed how customers shop and how retailers operate. One particular technology introduced in the 2010s revolutionized the in-store shopping experience by eliminating one of retail's most persistent pain points. Test your knowledge about this game-changing retail innovation that has been widely adopted by major retailers worldwide.

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Amazon Go's Just Walk Out technology
RFID self-checkout kiosks
Mobile scan-and-pay systems
Biometric payment terminals