Which retail analytics innovation, invented in the 1990s, revolutionized customer behavior tracking by allowing retailers to identify individual shopping patterns without requiring personal identification?

The evolution of retail analytics has transformed how businesses understand consumer behavior. Behind today's personalized shopping experiences lies a fascinating history of technological breakthroughs and innovative thinking. This poll tests your knowledge about a pivotal invention in retail analytics that fundamentally changed how retailers track and respond to customer behavior patterns. Do you know which groundbreaking analytics tool first allowed retailers to truly understand their customers at scale?

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Customer Loyalty Cards with barcodes
Bluetooth-enabled shopping cart trackers
RFID-based product movement analysis
Thermal imaging customer path mapping