Grasp Interaction with Tablets by Katrin Wolf

By Katrin Wolf

This ebook offers directions for a destiny gadget kind: a capsule that enables ergonomic entrance- and back-of-device interplay. those instructions aid designers and builders of consumer interfaces to construct ergonomic purposes for pill units, specifically for units that let back-of-device interplay. moreover, brands of capsule units receive arguments that back-of-device interplay is a promising extension of the interplay layout area and leads to elevated enter services, enriched layout probabilities, and confirmed usability. the tips are derived from empirical reviews and built to slot the clients’ abilities to the way in which the radical equipment kind is held. 3 specific learn parts which are appropriate to strengthen layout directions for pill interplay are investigated: ergonomic gestures, interplay components, and pointing techniques.

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20 3 An Ergonomic Gesture Repertoire for Grasp-based Interaction Feix et al. (2009) address both goals by analyzing 14 grasp taxonomies generate over more than 90 years of research on the human hand. They categorized three main grasp types that refer to 33 different sub-types. 1 shows the three main grasp types of Feix et al. (2009) that are: palm, pad, and side. 1. Based on the inter-finger dependencies, information about indirectly involved fingers/digits is added by the author. Finally the digits, which may be capable for executing gesture with the grasping hand but without losing the grasp, are concluded.

3 Initial gesture set (left) that served as base to generate the final gesture repertoire (right) 24 3 An Ergonomic Gesture Repertoire for Grasp-based Interaction two pad-gestures, and two side-gestures, which were already used within research projects about finger- and grasp-based gestures. The experts were asked to execute the gestures of the existing set with each prop (Fig. 2) and to add gestures they could also think of to be adequate for the given context. For each gesture, the ones of the existing set as well as for the new collected ones, follow five interview questions—referring to the research questions Q1, Q2, and Q3 (Sect.

This chapter focuses on the ergonomic design of gestures for grasp-based interactions that can be performed with the grasping hand. Researchers have indicated that scientific knowledge about gesture interaction is still limited but is beginning to address the human factors of gesture execution (Zhai et al. 2012). In that sense, gesture design considering human factors shall be ergonomic and thus suite with the abilities and motor constraints of the human hand as well as of the limitations given by grasping a device or an object.

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