Which payment innovation first allowed passengers to simply 'tap and go' on public transportation systems without needing to purchase tickets in advance?

The transportation industry has undergone significant transformations in how passengers pay for their journeys. From paper tickets to sophisticated digital solutions, payment systems have evolved to enhance convenience and efficiency. This poll tests your knowledge about a game-changing payment technology that revolutionized public transportation operations and passenger experience in major transit systems worldwide. Can you identify which innovation marked a turning point for transportation payment systems?

This is a live public trivia poll on AIPolls.Net. Vote and see real-time results.

Contactless smart cards (like London's Oyster card and Hong Kong's Octopus card)
QR code mobile tickets
RFID wristbands
Biometric payment systems