Which innovative retail technology did Nike first introduce in 2018 that revolutionized personalized footwear fitting in their flagship stores?

The sports retail landscape has been transformed by technological innovations that enhance customer experience and boost sales. From virtual fitting rooms to AI-powered equipment recommendations, sports retailers are constantly evolving to meet consumer demands. This trivia question focuses on a revolutionary retail innovation that dramatically changed how athletes shop for performance gear. Test your knowledge of retail technology breakthroughs in the sports industry!

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Nike Fit: A computer vision and machine learning system that scans feet to recommend perfect shoe size
Nike Pulse: A biometric sensor system that analyzes gait patterns to suggest optimal shoe models
Nike Custom Hub: A 3D printing station allowing customers to create custom insoles on-demand
Nike Virtual Vault: AR technology letting shoppers try limited-edition shoes virtually before purchase