Which IoT innovation was FIRST widely adopted in professional sports stadiums to enhance the fan experience?

The Internet of Things (IoT) has dramatically transformed how sports venues operate, enhancing fan experiences and team performance tracking. Modern stadiums are increasingly becoming 'smart venues' with interconnected technologies that revolutionize everything from crowd management to player analytics. Test your knowledge about how IoT technology is reshaping the sports industry and creating next-generation fan experiences.

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Biometric ticketing systems for contactless entry
Stadium-wide high-density WiFi networks
Automated concession ordering from seats via app
Real-time seat upgrade platforms using location services