Displaying Multiple User Selections in Public Multi-user Wall-mounted Large-display Information Visualisation Environments

This paper investigates how we can display multiple user selections on public multi-user wall-mounted large-display information visualization environments. This is done by looking at a prototype metro navigation system that allows different users to plan their route around a public metro system without relying on access to mobile devices by interacting with a large display. Our results show that user selections can be shown on this type of system can be done by using animation to highlight new selections with marching ants for lines and pulsing for points. Marching ants can merge to form a solid line, and pulsing can slow to stop after the user's selection is highlighted. This allows large numbers of users to use the same interface simultaneously as long as no two user's initial interaction occurs at the same time.