Which fare collection technology was first widely adopted by major transit systems to replace traditional paper tickets and tokens in the 1990s?

Modern transportation relies heavily on sophisticated point of sale systems for fare collection. From paper tickets to contactless payments, these systems have revolutionized how passengers pay for their journeys. This poll tests your knowledge about the technological evolution of payment systems in public transportation and how they've shaped passenger experiences and operational efficiency across global transit networks.

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RFID-based contactless smart cards (like London's Oyster card or Hong Kong's Octopus card)
Mobile phone QR code ticketing systems
NFC-enabled credit card payment terminals
Biometric facial recognition payment systems