Biometrics could be used to purchase tickets for the UK's trains in the future, the Rail Delivery Group (RDG) has stated in its digital blueprint for Britain's railways.Published on the same day as the RDG annual conference, the group's study suggests that Bluetooth and biometric ticketing could eventually replace the magnetic strip tickets that have been around since the 1980s.A Bluetooth project to automatically open ticket barrier gates is being trialled by Chiltern Railways between Oxford Parkway and London Marylebone this year.Paul Plummer, chief executive of the RDG, said: “Our railway is increasingly full and while the industry is taking action to address the challenges of today, working together to deliver the £50 billion plus Railway Upgrade Plan, we also need to be looking at the solutions of tomorrow.”This blueprint sets out how we can harness digital technology to make journeys better for passengers and freight customers on a railway that's simpler and easier to use.”He added: “The Capability Delivery Plan is an important step in ensuring that the whole railway and its supply chain collaborates efficiently and effectively to deliver the digital railway's wide-ranging benefits, including better services for customers, more and better jobs for our people, and better value for taxpayers.”