Which retail technology innovation was first commercially used at an Ohio Marsh supermarket in 1974, transforming checkout efficiency across the retail industry?

The way we shop today has been shaped by countless technological innovations throughout history. One particular invention revolutionized retail checkout processes worldwide, dramatically increasing efficiency and accuracy while reducing labor costs. This poll tests your knowledge about a pivotal retail technology advancement that changed the face of shopping forever and set the foundation for many modern retail technologies we take for granted today.

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UPC barcode scanner
Electronic cash register (ECR)
Self-checkout kiosk
RFID inventory tracking