Instead of having riders fumble with cash and change, trying to navigate complicated machines, and not knowing which line leads where, "Interface" is a project designed to eliminate these problems, and give riders on WMATA a much more fluent experience. Starting from redesigned and updated Metro kiosks, this project includes a full package with a matching smartphone app that will allow users to add money to their SmarTrip cards instantly, instead of having to wait in long lines at stations and get where they need to quicker.