Which technological innovation has generated the highest ROI for sports retailers implementing 'smart fitting room' experiences?

The sports retail landscape has undergone dramatic technological evolution in recent years. From smart fitting rooms to AI-powered inventory management, technology has revolutionized how consumers shop for their favorite athletic gear. This trivia question explores one of the most significant technological innovations that changed the game for sports retailers and enhanced customer experiences. Test your knowledge about how technology has transformed the sports retail industry!

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RFID-powered inventory tracking that suggests complementary items based on what's brought into the fitting room
Augmented reality mirrors that allow customers to virtually try on different colors/sizes without changing clothes
Biometric scanners that recommend products based on body measurements and athletic performance goals
Voice-activated assistants that can request different sizes and items be brought to the fitting room