Which retail analytics innovation first allowed businesses to systematically track and analyze individual customer purchase history across multiple shopping trips?

In today's competitive retail landscape, data analytics has transformed how businesses understand customer behavior and optimize operations. This poll tests your knowledge about a significant retail analytics innovation that revolutionized how companies track and analyze consumer purchasing patterns. The correct answer represents a technological breakthrough that changed retail decision-making forever.

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Loyalty card programs with unique customer identifiers
RFID inventory tracking systems
Heat mapping of in-store customer movements
Facial recognition customer identification