Which product technology, first used commercially in 1974 at an Ohio supermarket, revolutionized retail by allowing automated price lookup and inventory tracking?

Test your knowledge about one of the most significant technological innovations in retail history that transformed how consumers shop. This pivotal development in the 1970s fundamentally changed the retail landscape and set the stage for today's digital shopping experiences. Do you know which technology sparked this retail revolution?

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Universal Product Code (UPC) barcode scanning
Electronic cash registers (ECR)
Magnetic stripe credit card readers
Automated teller machines (ATMs)