Caleb Southern|James Clawson|Brian L. Frey|Gregory D. Abowd|Mario Romero
An evaluation of BrailleTouch
Georgia Institute of Technology|Georgia Institute of Technology|University of Maryland, Baltimore County|Georgia Institute of Technology|Georgia Institute of Technology
present evaluation brailletouch accessible keyboard blind users touchscreen smartphones based standard perkins brailler brailletouch implements sixkey chorded braille soft keyboard eleven blind participants typed 165 twentyminute sessions three mobile devices 1 brailletouch smartphone 2 soft braille keyboard touchscreen tablet 3 commercial braille keyboard physical keys expert blind users averaged 232 words per minute wpm brailletouch smartphone fastest participant touchscreen novice achieved 321 wpm first session overall participants able transfer existing braille typing skills touchscreen device within hour practice report speed braille text entry three mobile devices depth error analysis lessons learned design evaluation accessible eyesfree soft keyboards