The Octopus Card is a smart card used for electronic payments in Hong Kong. It was introduced in 1997 and is widely accepted for public transportation, including buses, trains, and ferries. The card can also be used at various retail outlets, restaurants, and vending machines, making it a convenient payment method for daily transactions. Users can load money onto the Octopus Card at designated machines or retail locations. The card operates on a contactless system, allowing for quick and easy payments. It has become an essential part of daily life in Hong Kong, promoting cashless transactions and enhancing the efficiency of public transport.