Which retail invention, patented in 1952 by Norman Joseph Woodland and Bernard Silver, was initially met with skepticism but eventually transformed the retail checkout experience worldwide?

Before the digital revolution transformed shopping, several key inventions changed the retail landscape forever. Test your knowledge about the historical breakthroughs that laid the groundwork for modern commerce. These discoveries fundamentally changed how consumers interact with products and how retailers operate their businesses. Some innovations were initially met with skepticism but went on to revolutionize entire industries.

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The barcode (Universal Product Code)
The electronic cash register
The shopping cart
The credit card swipe machine