Users' Content Memorization in Multi-user Interactive Public Displays

In this study, we investigate users' content memorization in interactive public displays that can be simultaneously used by multiple persons. We designed a system in which interaction would enhance users' content memorization, and that allows multiple users to collaborate on interaction. We installed the system in a university campus and conducted a field study on passersby. We interviewed the users who continued interacting with the system to reach or pass a certain phase, and evaluated users' content memorization from the accuracy of displayed information that was unconsciously memorized. As a result, the users who interacted with the display had a significantly higher correct answer rate for detailed questions about the displayed information than those who only watched a video on the display, which suggests that our interactive public display resulted in better content memorization. It is also shown that displayed information was efficiently delivered to many users by enabling multiple persons to interact with the display.