We explored the appropriate amount of screen information in the case of a subway ticket machine, for making smart public devices more accessible to older people. We determined interface barriers in using (1) a subway map and (2) a station overview matrix through two paper prototypes, in order to find the appropriate amount of information for each application, as well as to understand the relationship between information quantity and completion time efficiency. To ensure validity, data from older people was compared to that of a control group of young users. As a result, we identified how much screen information the elderly can handle when using digital maps and matrices. We defined an appropriate zooming range and an optimal matrix size to be shown on the screen. This study contributes to designing barrier-free public smart devices.
|Title of host publication||Proceedings of the 6th IASDR (The International Association of Societies of Design Research Congress|
|Publication status||Published - 2015|
- Elderly users
- Paper prototype