Which retail innovation, first implemented in supermarkets in the 1930s, revolutionized food marketing by allowing companies to analyze which products customers were most drawn to?

In the competitive food industry, marketing strategies can make or break a product's success. Beyond just taste and nutrition, clever marketing techniques influence consumer behavior and purchasing decisions. This trivia question explores a landmark marketing innovation that revolutionized how grocery stores influence customer purchases and product placement decisions. Test your knowledge of the science behind food product marketing!

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Eye-tracking technology
Shopping carts
Checkout scanners
Loyalty cards