Which heat mapping technology is most commonly used by modern retailers to analyze customer movement patterns in physical store layouts?

In the world of geographic retail analytics, understanding customer movement patterns and store placement is crucial for business success. Location intelligence combines geographic data with customer behavior to optimize retail operations. This poll tests your knowledge of how retailers use geographic data to make strategic decisions about store layouts and customer flow analysis. Can you identify the correct approach that leading retailers are implementing?

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Wi-Fi triangulation that tracks smartphone signals anonymously to create density maps of customer dwell times
Infrared satellite imaging that penetrates store roofs to create thermal outlines of customer clusters
RFID tags embedded in shopping carts that transmit location data to ceiling-mounted receivers
Geomagnetic positioning systems that detect disruptions in Earth's magnetic field caused by customer movement