Each Scheidt & Bachmann Ticket XPress machine costs about £30,000 to purchase and install. Machines are tall and wide. They can have a depth of either or depending on the style of casing, which in either case is built of thick steel with a steel and aluminium door of thickness. A transflective liquid-crystal display touchscreen forms the user interface. Early machines had their screens placed too high for wheelchair users, so were not Disability Discrimination Act-compliant. From early 2005, the layout was redesigned so that the screen was lower, and older machines were converted to make them accessible.