Which retail innovation was first introduced by Piggly Wiggly in 1916, revolutionizing how customers interacted with products and setting the standard for modern retail operations?

The retail landscape has been transformed by technological innovations that changed how we shop forever. Some retail transformations became iconic milestones in business history, fundamentally altering consumer behavior and setting new industry standards. This trivia question focuses on a groundbreaking retail digital transformation that revolutionized the shopping experience. Test your knowledge of retail innovation history!

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Self-checkout kiosks
The self-service shopping model (allowing customers to select their own merchandise)
Barcode scanning technology
Store credit cards and loyalty programs