Communicating deictic gestures through handheld multi-touch devices

Deictic gestures are gestures we make during communication to point at objects or persons. Indicative acts of directing-to guide the addressee to an object, while placing-for acts place an object for the addressee’s attention. Commonly used presentation software tools, such as PowerPoint and Keynote, offer ample support for placing-for gestures, e.g. slide transitions, progressive disclosure of list items and animations. Such presentation tools, however, do not generally offer adequate support for the directing-to indicative act (i.e. pointing gestures). In this paper we argue the value of presenting deictic gestures to a remote audience. Our research approach is threefold: identify indicative acts that are naturally produced by presenters; design tangible gestures for multi-touch surfaces that replicate the intent of those indicative acts; and design a set of graphical effects for remote viewing that best represent these indicative acts for the audience. Clinton Jorge1, Jos P. van Leeuwen2, Dennis Dams3, Jan Bouwen4 1 University of Madeira, Madeira-ITI, Funchal, Portugal; 2 The Hague University of Applied Sciences, The Hague, Netherlands; 3,4 Bell Labs, Alcatel-Lucent, Antwerp, Belgium Copyright shared between: University of Madeira, Madeira-ITI, Funchal, Portugal; The Hague University of Applied Sciences, The Hague, Netherlands; Bell Labs, Alcatel-Lucent, Antwerp, Belgiu