Using small screen space more efficiently
Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
Least Squares Support Vector Machine Classifiers
Neural Processing Letters
Power browser: efficient Web browsing for PDAs
Proceedings of the SIGCHI conference on Human Factors in Computing Systems
Improving mobile internet usability
Proceedings of the 10th international conference on World Wide Web
Sorting Out Searching on Small Screen Devices
Mobile HCI '02 Proceedings of the 4th International Symposium on Mobile Human-Computer Interaction
Supporting Social Interaction with Smart Phones
IEEE Pervasive Computing
Applying user-centered design to mobile application development
Communications of the ACM - Designing for the mobile device
Identifying mobile phone design features critical to user satisfaction
Human Factors in Ergonomics & Manufacturing
The Smart Phone: A Ubiquitous Input Device
IEEE Pervasive Computing
Rubbing and tapping for precise and rapid selection on touch-screen displays
Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
Information Sciences: an International Journal
Support vector regression from simulation data and few experimental samples
Information Sciences: an International Journal
Feel-good touch: finding the most pleasant tactile feedback for a mobile touch screen button
ICMI '08 Proceedings of the 10th international conference on Multimodal interfaces
Smart phone for mobile commerce
Computer Standards & Interfaces
Simultaneous feature selection and classification using kernel-penalized support vector machines
Information Sciences: an International Journal
Standardization of mobile phone positioning for 3G systems
IEEE Communications Magazine
Exploring smart phone improvements based on a hybrid MCDM model
Expert Systems with Applications: An International Journal
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Recently, the smart phone has become a representative device in information communication. The smart phone generally adopts a full touch-screen panel that reflects the growing need for improved multimedia access. In the interest of customer-oriented design, HCI features such as controllability and a menu structure have to be properly considered. Among the numerous factors that have an effect on the controllability when using smart phones, the effects of the phone size, user's hand length and control location are investigated in this paper. Moreover, an effort was made to determine the changes in the user preference according to the control location. A series of experiments were conducted, in which preference scores were measured. It was found that the product width and thickness have significant effects on the user preference. Specifically, the effect of the product width is greater than that of thickness. However, the optimal control location varies little regardless of phone size and hand length. A desirable phone size was defined for the customer-oriented development of smart phones. Iso-preference contour plots in the form of a rotated ellipse were derived by the Support Vector Regression (SVR) method while the difference in sensitivity was assessed with respect to the meridian (horizontal and vertical directions). The concept of the preferable control zone was developed by linking the critical points in four directions despite the difference in the angle of rotation. In addition, the situation where the product is concurrently controlled by both hands was investigated. The results of the study are expected to aid in defining the size of handheld information communication devices such as smart phones and PDAs. It is also expected that the optimal control location and proposed contours can guide the designer to optimally layout various functions of the menu on the display.