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Usability evaluation of the athens transport electronic ticket

Ordinarily the effects of a bad User Interface (UI) are often inconsequential. We tolerate the shortcomings, adapt and move on. In some cases however, it is impossible to ignore. Poorly designed products and systems can cause anxiety to the user and can cost them time and money. Most examples of a bad UI design point to the poor design of websites. This is the case of with the UI design of Ticket Vending Machines (TVM). This paper describes the process of issuing a new electronic ticket (ET) in the Athens Metro/Tram/Bus system, following the retirement of the paper ticket and evaluates the process from a usability point of view.