Question: can i use my myki card in sydney

Answer: No, myki (/ˈmaɪ.kiː/ MY-kee) is a reloadable contactless smartcard ticketing system used on public transport in Victoria, Australia. The system is promoted by Public Transport Victoria and is valid on most public transport services in Melbourne and regional Victoria. The system was developed by Kamco (Keane Australia Micropayment Consortium). The initial 10-year contract was worth approximately A$1.5 billion, described by The Age as ``the (world's) biggest for a smartcard ticketing system''.