Myki, Victoria's controversial public transport ticketing system, will trial a new app for 1000 specially selected users who will be able to touch on and off and pay for their travel via their mobile phone.

The "mobile myki" app would allow people with Android devices to use their phones rather than a card at existing ticket barriers and card readers across trains, trams and buses in Melbourne and beyond.

Myki cards could be a thing of the past if the trial is successful. Credit:Rebecca Hallas

The trial will cost taxpayers as much as $3 million on top of the existing $700 million myki contract, which began last year.

"There is a small additional cost for this of between $2 [million] to $3 million to run the whole trial," Public Transport Minister Jacinta Allan said.