On-line personalization of a touch screen based keyboard
Proceedings of the 8th international conference on Intelligent user interfaces
Target size study for one-handed thumb use on small touchscreen devices
Proceedings of the 8th conference on Human-computer interaction with mobile devices and services
Shift: a technique for operating pen-based interfaces using touch
Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
Escape: a target selection technique using visually-cued gestures
Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
Evaluating one handed thumb tapping on mobile touchscreen devices
GI '08 Proceedings of graphics interface 2008
TapTap and MagStick: improving one-handed target acquisition on small touch-screens
AVI '08 Proceedings of the working conference on Advanced visual interfaces
Touch key design for target selection on a mobile phone
Proceedings of the 10th international conference on Human computer interaction with mobile devices and services
The performance of touch screen soft buttons
Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
Investigating selection and reading performance on a mobile phone while walking
Proceedings of the 12th international conference on Human computer interaction with mobile devices and services
My App is an Experiment: Experience from User Studies in Mobile App Stores
International Journal of Mobile Human Computer Interaction
Release your app on Sunday eve: finding the best time to deploy apps
Proceedings of the 13th International Conference on Human Computer Interaction with Mobile Devices and Services
It does not Fitts my data! analysing large amounts of mobile touch data
INTERACT'11 Proceedings of the 13th IFIP TC 13 international conference on Human-computer interaction - Volume Part IV
Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
Hit it!: an apparatus for upscaling mobile HCI studies
CHI '12 Extended Abstracts on Human Factors in Computing Systems
Identifying unintentional touches on handheld touch screen devices
Proceedings of the Designing Interactive Systems Conference
The fat thumb: using the thumb's contact size for single-handed mobile interaction
MobileHCI '12 Proceedings of the 14th international conference on Human-computer interaction with mobile devices and services
Playing it real: magic lens and static peephole interfaces for games in a public space
MobileHCI '12 Proceedings of the 14th international conference on Human-computer interaction with mobile devices and services
Touch behavior with different postures on soft smartphone keyboards
MobileHCI '12 Proceedings of the 14th international conference on Human-computer interaction with mobile devices and services
A user-specific machine learning approach for improving touch accuracy on mobile devices
Proceedings of the 25th annual ACM symposium on User interface software and technology
Designing for individuals: usable touch-screen interaction through shared user models
Proceedings of the 14th international ACM SIGACCESS conference on Computers and accessibility
A personal touch: recognizing users based on touch screen behavior
Proceedings of the Third International Workshop on Sensing Applications on Mobile Phones
App stores: external validity for mobile HCI
interactions
Drag and drop the apple: the semantic weight of words and images in touch-based interaction
Proceedings of the 7th International Conference on Tangible, Embedded and Embodied Interaction
Categorised ethical guidelines for large scale mobile HCI
Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
Measuring touch bias of one thumb posture on direct touch-based mobile devices
CHI '13 Extended Abstracts on Human Factors in Computing Systems
Insights into layout patterns of mobile user interfaces by an automatic analysis of android apps
Proceedings of the 5th ACM SIGCHI symposium on Engineering interactive computing systems
User-specific touch models in a cross-device context
Proceedings of the 15th international conference on Human-computer interaction with mobile devices and services
Improving user authentication on mobile devices: a touchscreen graphical password
Proceedings of the 15th international conference on Human-computer interaction with mobile devices and services
Understanding performance of eyes-free, absolute position control on touchable mobile phones
Proceedings of the 15th international conference on Human-computer interaction with mobile devices and services
Upright or sideways?: analysis of smartphone postures in the wild
Proceedings of the 15th international conference on Human-computer interaction with mobile devices and services
Sparse selection of training data for touch correction systems
Proceedings of the 15th international conference on Human-computer interaction with mobile devices and services
Informing future design via large-scale research methods and big data
Proceedings of the 15th international conference on Human-computer interaction with mobile devices and services
Bayesian touch: a statistical criterion of target selection with finger touch
Proceedings of the 26th annual ACM symposium on User interface software and technology
Communicative modalities for mobile device interaction
International Journal of Human-Computer Studies
Investigating mobile stereoscopic 3D touchscreen interaction
Proceedings of the 25th Australian Computer-Human Interaction Conference: Augmentation, Application, Innovation, Collaboration
Requirements and design strategies for open source interactive computer science eBooks
Proceedings of the ITiCSE working group reports conference on Innovation and technology in computer science education-working group reports
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Touchscreens became the dominant input device for smartphones. Users' touch behaviour has been widely studied in lab studies with a relative low number of participants. In contrast, we published a game in the Android Market that records the touch behaviour when executing a controlled task to collect large amounts of touch events. Players' task is to simply touch circles appearing on the screen. Data from 91,731 installations has been collected and players produced 120,626,225 touch events. We determined the error rates for different target sizes and screen locations. The amount of data enabled us to show that touch positions are systematically skewed. A compensation function that shifts the users' touches to reduce the amount of errors is derived from the data and evaluated by publishing an update of the game. The independent-measures experiment with data from 12,201 installations and 15,326,444 touch events shows that the function reduces the error rate by 7.79%. We argue that such a compensation function could improve the touch performance of virtually every smartphone user.