Which early retail innovation, introduced in the 1930s, revolutionized grocery shopping by allowing customers to select their own products rather than having clerks gather items from a list?

Throughout history, certain product innovations have fundamentally transformed how people live, work, and interact. Some innovations were revolutionary upon release, while others took time to reshape society. This poll tests your knowledge about a pivotal product development moment that had far-reaching historical consequences and changed consumer behavior forever.

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Self-service shopping carts (invented by Sylvan Goldman)
Barcode scanning systems (developed by Norman Woodland)
Automated checkout counters (pioneered by Howard Schneider)
Refrigerated display cases (created by Clarence Birdseye)