Title :

Towards a Unified and Efficient Command Selection Mechanism for Touch-Based Devices Using Soft Keyboard Hotkeys

Author(s) :

Fennedy, Katherine [Auteur]
Human-Computer Interaction Laboratory [ NUS-HCI Lab]
Singapore University of Technology and Design [SUTD]
Srivastava, Angad [Auteur]
Singapore University of Technology and Design [SUTD]
Yale-NUS College
Malacria, Sylvain [Auteur]
Technology and knowledge for interaction [LOKI]
Perrault, Simon [Auteur]
Singapore University of Technology and Design [SUTD]

Journal title :

ACM Transactions on Computer-Human Interaction

Publisher :

Association for Computing Machinery

Publication date :

2022-01-07

ISSN :

1073-0516

English keyword(s) :

interaction technique
command selection
mobile devices
touch-based devices
keyboard shortcuts
hotkeys

HAL domain(s) :

Informatique [cs]/Interface homme-machine [cs.HC]

English abstract : [en]

We advocate for the usage of hotkeys on touch-based devices by capitalising on soft keyboards through four studies. First, we evaluated visual designs and recommended icons with command names for novices while letters with ...
Show more >We advocate for the usage of hotkeys on touch-based devices by capitalising on soft keyboards through four studies. First, we evaluated visual designs and recommended icons with command names for novices while letters with command names for experts. Second, we investigated the discoverability by asking crowdworkers to use our prototype, with some tasks only doable upon successfully discovering the technique. Discovery rates were high regardless of conditions that vary the familiarity and saliency of modifier keys. However, familiarity with desktop hotkeys boosted discoverability. Our third study focused on how prior knowledge of hotkeys could be leveraged and resulted in a 5% selection time improvement and identified the role of spatial memory in retention. Finally, we compared our soft keyboard layout with a grid layout similar to FastTap. The latter offered a 12-16% gain on selection speed, but at a high cost in terms of screen estate and low spatial stability.Show less >

Language :

Anglais

Peer reviewed article :

Oui

Audience :

Internationale

Popular science :

Non

ANR Project :

Promouvoir et améliorer la découverte des fonctionnalités et des interactions dans les systèmes interactifs

Collections :

• Centre de Recherche en Informatique, Signal et Automatique de Lille (CRIStAL) - UMR 9189

Source :

Harvested from HAL