Usable self-service in city halls
Based on a formal specification, City Menu is a touchscreen terminal application for self-service in the city hall. We translated the functional requirements in an interface that is consistent and looks contemporary. Using subtle animations, the user is guided through processes like requesting a new driver’s license.
With Stijn van Iersel
We specified our high-level interaction ideas through Petri nets. These are mathematical structures that allow for making sure an interactive system will work logically correct. This is especially useful in validating complex discrete systems and provides a common language with engineers.
We paid a lot of attention to the graphical user interface and took into consideration the decades of history it has. I enjoy designing both the high-level interaction and caring for the smallest detail. A button label or animation can make the difference between causing ‘computer anxiety’ and delighting the user.
To validate and improve the design, I performed formative evaluations with users. Observing user’s reactions live and on video and discussing their thoughts has given me a lot of insight in specific issues as well as general things to consider when designing.
Based on user observations, I had a new critical look at the design. With quick but clear drawings, accompanied by fragments of the user evaluations, I was able to present convincing improvements.