| Abstract |
| In this study, we aim to maximize user convenience in using mobile devicesand to create effective user environments in accordance with the fact that the trend ofincreasing use of mobile devices is proportional to the increasing frequency of thumb use by users. The explosiveincrease in mobile device usage is so surprising that it is fairly accurate to call the present time as the mobile era. Various kinds of digital devices, including cellular phones, tend to make users use their thumbs much more often than in any previous period in modern history. It can be said that almost every mobile device is controlled by the user`s thumbs. However, the application of measured data in terms of ergonomics has rarely been used. These days, users use their thumbs most often to control mobile devices. In fact, we have already been accustomed to using thumbs on TV remote controller at home. With the advent of cellular phones, we began using thumbs instead of the index finger in dialing, and now the use of thumbs has been extended to the area where thumbs operate the control panel of the digital camera, which is already a further shift from simply grabbing and holding a button or lever. Now, the thumb has become a very important tool for digital and mobile device users. Accordingly, it can be said that the thumbs as a tool and the measured data of user`s hand in terms ergonomics can provide the important index in shape, size and control panel layout of mobile devices and of any portable device. |
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| Key Words |
| Mobile device, Thumbs, Usability |
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