Tool support for developing scalable multiuser applications on multi-touch screens

Abstract. MT (Multi-touch) screens are platforms that enhance multiuser collaboration. In this work, we underline the need for novel interaction techniques and toolkits that allow multi-user collaboration on larger MT surfaces. We present ChordiAction toolkit that makes use of a novel chorded interaction technique allowing simultaneous multi-user interaction on scalable MT applications. We describe the design, the architecture and some efficient customizations practices of the toolkit and show how it can be effectively embedded in an application for multiuser interaction. As a proof of concept, we present some example applications using ChordiAction toolkit showing its potentials and discuss our future plans for further evaluation of this technique.

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