Which POS innovation revolutionized public transportation fare collection in the early 2000s, reducing boarding times by over 40% in major metropolitan areas?

Modern transportation has evolved significantly with technology integration. One key advancement has been in payment systems for tickets, fares, and services. Point of Sale (POS) systems in transportation have revolutionized how customers pay for rides, book tickets, and manage their travel. This poll tests your knowledge about a pivotal transformation in transportation POS technology that changed the industry forever.

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Contactless smart card payment systems (like London's Oyster card and Hong Kong's Octopus card)
Biometric fingerprint fare validation terminals
SMS ticket purchasing with QR code validation
Voice-activated ticket kiosks with instant receipt printing