Which invention is widely credited with revolutionizing modern customer loyalty programs by enabling businesses to track individual purchasing behavior at scale?

In the world of retail and marketing, customer loyalty programs have evolved dramatically since their inception. One particular invention revolutionized how businesses track, reward, and engage with their regular customers. This invention transformed simple punch cards into sophisticated digital systems that collect valuable consumer data while offering personalized rewards. Test your knowledge about this game-changing development in customer loyalty technology!

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• The magnetic stripe card, invented by IBM engineer Forrest Parry in 1960
• The QR code, created by Denso Wave's Masahiro Hara in 1994
• The RFID tag, developed by Charles Walton in 1973
• The UPC barcode, invented by IBM's George Laurer in 1973

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