Which city's public transport system first introduced the 'Oyster card', a contactless smart card that revolutionized fare collection and became a model for transit systems worldwide?

The transportation industry has undergone significant transformations in customer experience, particularly in how passengers pay for their journeys. Contactless payment systems have revolutionized the way people interact with public transit, reducing friction and improving efficiency. Test your knowledge about one of the most successful contactless ticketing implementations in public transportation!

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London
Tokyo
Hong Kong
Singapore