Speaking about the rollout, NSW Minister for Transport and Infrastructure Andrew Constance said the new technology put NSW among a "handful of transport networks around the world" using the technology.
However, they will not get the discounts and caps that come with the Opal card.
"It's created to be be able to be convenient for tourists, for those who left their Opal at home, it's about convenience", Mr Constance said. He said it is targeted at people looking for convenience.
"It's created to be able to be convenient for tourists [and] for those who might have left their Opal card at home".More news: Utica Police arrest mom after 9-month-old baby found in road
The expansion of the program, which follows a successful trial on the Manly Ferry, was announced by NSW Transport Minister Andrew Constance, who said the integration of contactless transport payments was about "choice and convenience". "We are not replacing the Opal system- the Opal system is here to stay, and of course attached to the Opal system are all the benefits", he said.
American Express welcomed the change, and pointed out that both Sydney residents and visitors to the city would benefit from the flexible payment options. With this contactless trial extension, customers will now also be able to use American Express and Visa cards to pay for their travel.
By Amex's count, nearly 60% of Australians use contactless payments and one in six use mobile wallets, which means the option to use these payment methods on their daily commute will likely be a popular one.
"I think you'll see this roll out very quickly across New South Wales and the other states won't be far behind either", Mastercard's Richard Wormald said.
On the Manly Ferry, tourists and one-off users preferred to use a debit card. Across London, more than 2.1 million journeys are now made using contactless on its bus, Tube and rail services every day.