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Design and Evaluation of Children Library App Interface

Public libraries provide important services for children. As traditional libraries gradually transition to Library 2.0, they are able to offer more digital services. Operating digital devices come naturally to children today, and there is a growing research interest in the field of human-machine interaction focusing on children as users. Consequently, this study developed a prototype app for children - "Book Search-Monster Island" - to conduct usability tests on the primary functions, explore issues that arise during usage, and further revise the app interface. The study results show that inappropriate use of graphics and insufficiently intuitive design may cause children to make cognitive errors. When designing future app interfaces, it should therefore be noted that adding text will help children identify the purpose of graphics, and using appropriate graphics along with intuitive visuals will prevent cognitive errors.