Sydney commuters could soon be able to add an Opal card to their smartphone's digital wallets, bringing the city a step closer to the transport minister’s vision of a subscription-style transport system.

The government in 2020 will trial the digital card, which will give commuters the same fares and benefits as physical adult Opal cards, though the system won’t yet cater for concession holders.

Sydney commuters could soon have access to a digital Opal card on their mobile phone smart wallets. Credit:James Alcock

The digital card will allow commuters to pay for all modes of public transport, as well as taxis and Uber, Transport Minister Andrew Constance said.

He said the government would seek a delivery partner in January, adding the new system was another step towards a completely digital public transport future.