Which retail IoT innovation has most significantly influenced the architectural design of modern flagship stores by enabling dynamic space utilization?

The intersection of architecture and retail technology is reshaping how physical stores are designed and experienced. Modern architectural firms are increasingly incorporating IoT solutions to create responsive retail environments that can adapt to consumer behavior in real-time. This trivia question explores one of the most significant innovations in this space that has influenced architectural design decisions for flagship retail locations.

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Computer vision customer flow mapping systems that track movement patterns to inform real-time store layout changes
RFID inventory management systems that automatically track product location and movement
Augmented reality mirrors that allow customers to virtually try products
Automated checkout systems that eliminate traditional cashier stations