Medusa: A Proximity-Aware Multi-touch Tabletop

Michelle Annett, Tovi GrossmanGeorge Fitzmaurice

ACM Symposium on User Interface Software & Technology

Medusa: A Proximity-Aware Multi-touch Tabletop (5:26 min.)


We present Medusa, a proximity aware multi-touch tabletop. Medusa uses 138 inexpensive proximity sensors to: detect a user’s presence and location, determine body and arm locations, distinguish between the right and left arms, and map touch point to specific users and specific hands. Our tracking algorithms and hardware designs are described. Exploring this unique design, we develop and report on a collection of interactions enabled by Medusa in support of multi-user collaborative design, specifically within the context of Proxi-Sketch, a multi-user UI prototyping tool. We discuss design issues, system implementation, limitations, and generalizable concepts throughout the paper.

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  • Multi-touch

    Multi-touch platforms have recently emerged into the consumer markets, and offer a rich and captivating interaction experience. At Autodesk Research we are investigating new user interface designs and interaction techniques for multi-touch systems, and exploring how existing software technologies can leverage the use of such systems.

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