Myki is a smart card ticketing system used for public transport in Melbourne, Victoria, Australia. It allows passengers to travel on trains, trams, and buses by tapping the card on card readers at stations and stops. Myki cards can be purchased and recharged at various locations, including vending machines and retail outlets. The system offers two types of cards: Myki Money, which is a pay-as-you-go option, and Myki Pass, which provides unlimited travel for a set period. Myki aims to make public transport more convenient and efficient for commuters and visitors in the region.