RAILWAY station ticket barriers could be replaced by sensors which detect when passengers board trains, a manufacturer has claimed.
The firm is testing the system in northern Italy and believes it could be used on trains, buses and trams in the UK.
It says ticket barriers could be obsolete once sensors are installed.
Hitachi's managing director Karen Boswell said: "This technology has the ability to transform public transport in every corner of the country, from rural buses to city centre train stations.
"For example, a passenger could use the app to take a bus in their local town and a train elsewhere in the country all in one day.
"This technology could have potential to make public transport more accessible for all passengers."
Passenger groups have said the introduction of smart ticketing, where a ticket is held on a smartphone or plastic card, is long overdue.