Typing is a common task on mobile devices and has beenwidely addressed in HCI research, mostly regarding quantitativefactors such as error rates and speed. Qualitative aspects,like personal expressiveness, have received less attention.
This paper makes individual typing behaviour visible tothe users to render mobile typing more personal and expressivein varying contexts: We introduce a dynamic font personalisationframework, TapScript, which adapts a finger-drawnfont according to user behaviour and context, such as fingerplacement, device orientation and movements - resulting ina handwritten-looking font. We implemented TapScript forevaluation with an online survey (N=91) and a field studywith a chat app (N=11). Looking at resulting fonts, surveyparticipants distinguished pairs of typists with 84.5% accuracyand walking/sitting with 94.8%. Study participants perceivedfonts as individual and the chat experience as personal.They also made creative explicit use of font adaptations.
This paper makes individual typing behaviour visible tothe users to render mobile typing more personal and expressivein varying contexts: We introduce a dynamic font personalisationframework, TapScript, which adapts a finger-drawnfont according to user behaviour and context, such as fingerplacement, device orientation and movements - resulting ina handwritten-looking font. We implemented TapScript forevaluation with an online survey (N=91) and a field studywith a chat app (N=11). Looking at resulting fonts, surveyparticipants distinguished pairs of typists with 84.5% accuracyand walking/sitting with 94.8%. Study participants perceivedfonts as individual and the chat experience as personal.They also made creative explicit use of font adaptations.
