CtrlMouse et TouchCtrl: Dupliquer les Délimiteurs de Mode sur la Souris

Les touches modifieur du clavier comme Ctrl ou Cmd ( ) sont utilisees pour delimiter l’entree de texte de la selection de commandes (raccourcis claviers). Dans cet article nous etudions l’impact de la localisation de ces delimi teurs sur la performance et la charge musculaire en les dupliquant sur la souris. A cet effet, nous derivons deux techniques d’interaction : CtrlMouse duplique les touches Ctrl et Shift en les associant aux boutons de la souris sous le pouce; TouchCtrl declenche automatiquement la touche Ctrl lorsque la main est posee sur la souris. Deux experiences en laboratoire revelent 1) que ces techniques sont d’autant plus adoptees par les utilisateurs que la tâche demande du pointage, 2) le cout temporel des modifieurs sur la selection de commandes est de 0,21s, ce qui correspond a 11,9% du temps d’execution et 3) le temps d’execution avec CtrlMouse avec un ou deux modifieurs est similaire. Nous avons egalement deploye ces techniques pour valider de maniere ecologique les resultats obtenus lors des evaluations en laboratoire. Enfin, nous presentons differents scenarii applicatifs elabores a partir de CtrlMouse et TouchCtrl.

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