Train tickets in the UK will soon be mainly digital.
The country's Rail Delivery Group (RDG) has promised that "nine out of 10" journeys will enable passengers to use a smart ticket on their phones or by using a smart card.
The process will require new technology at many stations including the recently upgraded Waterloo, Edinburgh Waverley and Gatwick Airport stations.
Plus new readers and software will be installed at London Blackfriars, Watford Junction, City Thameslink, London Bridge, East Croydon and Shenfield.
Robert Nisbet, regional director at the Rail Delivery Group, said: "Together, rail companies are going full steam ahead with smart ticketing, with passengers increasingly able to use their phones or smartcards thanks to station upgrades across the network.
"Of course, we want to go further, but realising the full benefits of new ticketing technology requires regulatory reform of the wider fares system. "That's why train companies are working with government to update the rules that underpin our rail fares."