Which innovative retail analytics technique did Southwest Airlines pioneer in 2019 that revolutionized how airlines understand in-flight purchasing behavior?

The transportation industry is continuously evolving how it analyzes customer behavior and preferences. Airlines, train operators, and ride-sharing companies all collect vast amounts of data to enhance customer experiences and drive loyalty. This trivia question focuses on a groundbreaking retail analytics approach that revolutionized how one transportation sector understands its customers. Test your knowledge about how data transforms the transportation retail experience!

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Sentiment-mapped cabin analytics that track facial expressions during the buying process
Dynamic pricing algorithm that adjusts in-flight purchase costs based on real-time customer engagement metrics
Loyalty-integrated purchase forecasting that predicts customer buying patterns based on frequent flyer status
Altitude-based consumption modeling that correlates purchase decisions with flight elevation data