[Paper Discussion] March 7th – Mobile UI Design and Texting

March 3, 2017

Time: Tuesday, March 7th, 2017, 11:00 AM – 12:00 PM

Location: 3124 Siebel Center

This week, we will be discussing the following 2 papers:

Paper 1 Title: Optimizing Touchscreen Keyboards for Gesture Typing (link: http://dl.acm.org/citation.cfm?doid=2702123.2702326)

Abstract: Despite its growing popularity, gesture typing suffers from a major problem not present in touch typing: gesture ambiguity on the Qwerty keyboard. By applying rigorous mathematical optimization methods, this paper systematically investigates the optimization space related to the accuracy, speed, and Qwerty similarity of a gesture typing keyboard. Our investigation shows that optimizing the layout for gesture clarity (a metric measuring how unique word gestures are on a keyboard) drastically improves the accuracy of gesture typing. Moreover, if we also accommodate gesture speed, or both gesture speed and Qwerty similarity, we can still reduce error rates by 52% and 37% over Qwerty, respectively. In addition to investigating the optimization space, this work contributes a set of optimized layouts such as GK-D and GK-T that can immediately benefit mobile device users.

Paper 2 Title: My Scrawl Hides It All: Protecting Text Messages Against Shoulder Surfing With Handwritten Fonts (link: http://dl.acm.org/citation.cfm?doid=2851581.2892511)

Abstract: We present a novel concept for protecting text messages (e.g. notifications) on mobile devices from shoulder surfing. We propose to display the text in the user’s handwriting, assuming that people can read their own handwriting easier and faster than strangers. Our approach was evaluated in a proof-of-concept user study that revealed significant differences in reading time: Participants were indeed slower when reading the unfamiliar handwriting of the other participants compared to their own, and they tended to make more errors. Even though this effect was not present for all participants, we argue that our results may provide the basis for protection mechanisms applicable in real-world scenarios.

© Copyright 2013. HCI Group at UIUC, All rights reserved. Site designed by Academic Web Pages