Which retail payment innovation was first introduced at a Marsh Supermarket in Troy, Ohio in 1974, forever changing how products were identified and processed at checkout?

The retail landscape has been revolutionized by numerous technological breakthroughs over the decades. One of the most significant innovations changed how customers pay for goods forever, creating convenience for shoppers and new data streams for retailers. This invention marked the transition from purely cash-based commerce to the diverse payment ecosystem we know today. Test your knowledge about this pivotal retail technology milestone!

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The Universal Product Code (UPC) barcode scanning system
The magnetic stripe credit card reader
The PIN-based debit card terminal
The digital receipt system