This document discusses mobile ticketing for rail travel. It begins by noting that while new mobile technologies are possible, customers will only adopt them if the old way of doing things is painful and the new way is better. It then discusses how Masabi has defined an official UK rail barcode standard for mobile tickets that allows customers to purchase tickets on their phone to avoid queues. The document outlines the key usability points of Masabi's mobile ticketing apps, such as no sign-up process and fast repeated purchases. It also discusses the benefits for customers of avoiding queues and for rail operators of lower costs per ticket sale.