Which retail innovation was first patented in 1952 by Norman Joseph Woodland and Bernard Silver, but took nearly 20 years to become widely adopted in stores?

The history of retail is marked by groundbreaking inventions that transformed how we shop. Some innovations were immediately successful, while others took time to gain consumer acceptance. This trivia question explores a pivotal moment when technology permanently changed the retail landscape and consumer behavior. Test your knowledge of retail innovation history!

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Barcode scanner
Electronic cash register
Self-service checkout
Automatic sliding doors