Digital ticketing trials have begun across the East Midlands, giving passengers simpler and more flexible tickets.
From 1 September, rail passengers travelling between Leicester, Derby and Nottingham will be able to check in and check out seamlessly on rail journeys, using a location-identifying app on their phone.
The app will track journeys using GPS (Global Positioning System) technology and then automatically charge passengers the best fare at the end of the day.
When a ticket is need for inspections or to go through a barrier, a unique code will be available in the app to be scanned.
The new technology will replace the need for paper tickets of QR codes.
The technology has already been tested in Switzerland, Denmark and Scotland, but this is the first time it will be used in England.