Depth, layering and transparency: developing design techniques

TL;DR: Investigations into the development of representation design techniques to take advantage of capabilities that a novel Multi-Layered Display (MLD) technology affords for improving information uptake in information intensive environments are reported on.

Abstract: In this paper we briefly report on our investigations into the development of representation design techniques to take advantage of capabilities that a novel Multi-Layered Display (MLD) technology affords for improving information uptake in information intensive environments. The MLD comprises two LCD screens separated by a 14 mm thick transparent perspex layer. Data presented on the rear screen is viewable through the front LCD. By combining transparency, colour, form of the data, and motion, we can create physically distinct layers of information which affords new ways of presenting information, such as information layering, focus + context, visual linking and information foraging support. Because of the visual effects caused by overlaying information in the physical layers, some of the old rules of display design such as optimal colour combinations, are no longer applicable within this context. New techniques for visualisation and interaction are needed, not just to make such a display readable, but also to take advantage of the new display capabilities. While we are still some way from prescribing techniques for designing information in layers across physically overlapping displays, we will also discuss five early lessons learned from the process of developing such design techniques.