Which technological innovation, first patented in 1983 by American inventor Charles Walton, revolutionized customer loyalty tracking and is now used in billions of loyalty cards worldwide?

Throughout history, customer loyalty programs have evolved significantly with technological advancements and marketing innovations. These programs have transformed from simple punch cards to sophisticated digital ecosystems that track, reward, and predict consumer behavior. Test your knowledge about a groundbreaking innovation that revolutionized how businesses build customer loyalty and gather consumer insights.

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RFID (Radio-Frequency Identification) technology
Magnetic stripe card technology
QR code scanning system
Holographic security embedding