Which retail invention, introduced in 1974, fundamentally changed checkout psychology and is credited with increasing impulse purchases by an estimated 40% at retail locations?

Throughout history, innovative retail technologies and discoveries have transformed how we shop. Some inventions were so groundbreaking that they fundamentally altered consumer behavior and created entirely new shopping paradigms. Test your knowledge about the pivotal retail innovations that shaped modern commerce and consumer psychology!

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Universal Product Code (UPC) barcode scanner
Electronic credit card terminal
Self-checkout kiosk
Digital receipt system