Transport will be free on Canberra's buses and trams from September to November when the current payment system ends but before the new system is fully introduced.
Transport Canberra's MyWay card tickets rely on the Optus 3G mobile phone network which is to be switched off soon.
With the new system, passengers will be able to pay with debit and credit cards, including by tapping a phone. "Old-style" cards loaded with cash will also be available.
