Which innovative customer feedback method did Nike use to develop their highly successful Flyknit technology?

The sports retail industry has undergone significant transformations in how customer feedback shapes product development. Major sporting goods brands now invest millions in customer insights technology to refine their offerings and create innovative products. This poll tests your knowledge about how one major sports retailer revolutionized their approach to customer feedback and created one of their most successful product lines as a result.

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3D foot-scanning stations in retail stores that collected data from over 300,000 customers
Social media sentiment analysis using AI to track mentions of competing products
In-app surveys that automatically triggered when competitors' stores were visited
Augmented reality fitting rooms that tracked customer reactions to different prototypes