Which point-of-sale innovation was FIRST widely adopted by major transportation companies to revolutionize ticket purchases?

The transportation industry has undergone significant technological transformation in recent years, particularly in how payments are processed. From traditional ticket counters to mobile applications, point-of-sale systems in transportation have evolved dramatically to enhance customer experience and operational efficiency. Test your knowledge about this critical aspect of modern transportation services!

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Self-service ticketing kiosks
Mobile ticketing applications
Contactless payment systems
Biometric payment authentication