Exploring and evaluating concepts
We want to explore different conceptual possibilities before settling with one concept. The technology of motion tracked have proved to be very flexible and suitable for the brief and situation, but we still have to decide on a final concept. We have spend some time converging on the concept of âtagâ with one circle following persons nearby, but it is still lacking inquisitive use. Therefore we want to diverge and look into other conceptual ideas. We might be inspired by other ideas and be able to combine them.
To decide which conceptual ideas to pursue, we have evaluated each ideaâs interactional properties.
Our initial test sketch, where all tracked persons are marked by a circle. When two circles collide they become one.
The main interaction attributes are here fast, instant and stepwise (Lenz et al., 2003). The system reacts instantly as intended and there are no fluent states in-between - the user is either being tracked or not. This makes the correlation between action and function too obvious, which leaves nothing left to be explored.
Inspired by the approach of using peepholes as means of engagement (Dalsgaard & Dindler, 2009) this sketch requires social collaboration to reveal hidden information - a video masked between users. This sketch includes an interesting visual aesthetic of layers being controlled by collective motion. But the user engagement is quite passive, because the goal of revealing the video is not challenging at all. Users just spread out their positions to expand the canvas. Furthermore the sketch donât encourage motion. When testing it we tended to stop moving and watch the video.
The strength of the "tag" concept is the way it encourage high intensity of interaction - also socially. But it is very obvious conceptually and includes no associations to IT - apart from the motion tracking technology.
"Spotlight" is a combination of "tag" and "video mask" in the sense, that it focuses on one user at a time and masks out everything else. A static image of the entrance at ITU is shown in the background with no people. On top of that the person in focus is shown, but other people a hidden, even though they are present i reality. This creates a conflict between, what the user expect to see on the flat screen, and what is actually shown. This conflict encourages inquiry (Dalsgaard, 2008, p. 4) and it provokes reflection. The user has to explore the installation actively to understand it. Conceptually this is very interesting, but the interaction lacks the visibility and apparent feedback from "tag".
Dalsgaard, Peter (2008): "Designing for Inquisitive use" in Designing Interactive Systems '08, ACM, South Africa.
Dalsgaard, Peter & Dindler, Christian (2009): âPeepholes as Means of Engagement in Interaction Designâ in Nordes 2009 - Engaging Artifacts, Oslo.
Lenz, Eva, Diefenbach, Sarah & Hassenzahl, Marc (2003):Â âExploring Relationships between Interaction Attributes and Experienceâ in DPPI 2003, ACM, Newcastle upon Tyne, UK.
Wensveen, S. A. G., Djajadiningrat, J. P. & Overbeeke, C. J. (2004): âInteraction Frogger: A Design Framework to Couple Action and Function through Feedback and Feedforwardâ in DIS2004, ACM, Massachusetts, USA.