Which retail innovation revolutionized the athletic footwear shopping experience by creating a more personalized fit and significantly reducing return rates?

In the competitive world of sports retail, technological innovations have transformed how athletes and enthusiasts interact with products. One breakthrough technology dramatically changed how customers shop for athletic footwear, creating a more personalized experience and reducing return rates by over 25%. This innovation was quickly adopted by major sports retailers worldwide and has since become an industry standard. Can you identify which revolutionary retail technology this was?

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3D foot scanning technology that creates personalized insole and shoe recommendations
AR mirrors that virtually show how different shoes would look with various athletic outfits
RFID-enabled shoes that track wear patterns and suggest replacement timelines
Subscription-based athletic shoe rotation programs with monthly deliveries