Which retail technology innovation was FIRST widely adopted by major airlines to transform the passenger check-in experience at airports?

The transportation industry has been transformed by innovative retail technologies that enhance the customer experience at airports, train stations, and transit hubs. From self-service kiosks to mobile apps for ticketing, these technologies have revolutionized how travelers interact with transportation services. Test your knowledge about the retail technology innovations that have changed the face of modern transportation retail environments.

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Self-service check-in kiosks (introduced widely in the late 1990s)
Mobile boarding passes on smartphones (became mainstream in the late 2000s)
Biometric identification systems (gained significant adoption in the mid-2010s)
RFID baggage tracking systems (implemented broadly in the early 2010s)