Which retail innovation, invented in 1916, is credited with creating the first true self-service shopping experience and revolutionizing how customers interact with products?

The retail landscape has been shaped by revolutionary inventions that transformed how we shop. Among these, the invention of self-service shopping fundamentally changed retail experiences worldwide. This poll tests your knowledge about one of the most significant turning points in retail history that paved the way for modern supermarkets and shopping as we know it today. Do you know which pioneering invention first allowed customers to serve themselves?

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The shopping cart, invented by Sylvan Goldman to help customers carry more items
The Piggly Wiggly store concept, created by Clarence Saunders with turnstiles and checkout counters
The barcode system, developed by Norman Joseph Woodland to track inventory
The cash register, invented by James Ritty to prevent employee theft and record sales