Which city was the first to implement a completely contactless open payment system for public transportation, allowing passengers to pay directly with credit/debit cards without a separate transit card?

Modern transportation systems have evolved dramatically with technological advancements. One of the most significant innovations in recent years has been the adoption of contactless payment systems across public transit networks worldwide. These systems have transformed the passenger experience and streamlined operations. Test your knowledge about this retail technology advancement in the transportation sector!

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London (Transport for London)
Tokyo (Japan Railways)
New York City (MTA)
Singapore (Land Transport Authority)