E-Pad: Large Display Pointing in a Continuous Interaction Space around a Mobile Device

Cagan Arslan (1) , Yosra Rekik (2) , Laurent Grisoni (1, 3)

1 CRIStAL - Centre de Recherche en Informatique, Signal et Automatique de Lille - UMR 9189
2 LAMIH - Laboratoire d'Automatique, de Mécanique et d'Informatique industrielles et Humaines - UMR 8201
3 IRCICA - Institut de Recherche sur les Composants logiciels et matériels pour l'Information et la Communication Avancé - UAR 3380

Relative pointing through using tactile mobile device (such as tablets of phones) on a large display is a viable interaction technique (that we call Pad in this paper) which permits accurate pointing. However, limited device size has consequences on interaction. Such systems are known to often require clutching, which degrades performances. We present E-Pad, an indirect relative pointing interaction technique which takes benefit of the mobile tactile surface combined with its surrounding space. A user can perform continuous relative pointing starting on the pad then continuing in the free space around the pad, within arm's reach. As a first step toward E-Pad, we first introduce extended continuous relative pointing gestures and conduct a preliminary study to determine how people move their hand around the mobile device. We then conduct an experiment that compares the performance of E-Pad and Pad. Our findings indicate that E-Pad is faster than Pad and decreases the number of clutches without compromising accuracy. Our findings also suggest an overwhelming preference for E-Pad.

Mots clés: mobile devices; extended gestures; continuous interaction; Touch screens

Domaines: Interface homme-machine [cs.HC]

Cagan Arslan, Yosra Rekik, Laurent Grisoni. E-Pad: Large Display Pointing in a Continuous Interaction Space around a Mobile Device. DIS 2019 : Designing Interactive Systems Conference 2019, Jun 2019, San Diego, United States. pp.1101-1108, ⟨10.1145/3322276.3322284⟩. ⟨hal-02432474⟩