TAILIEUCHUNG - Designing the Mobile User Experience phần 3

Một mức độ nào đó, không có sự khác biệt đặc biệt giữa người sử dụng điện thoại di động và người sử dụng của các thiết bị khác. Trong thực tế, chi phí thấp của thiết bị di động liên quan đến máy tính, đặc biệt kết hợp với chi phí cao về lắp đặt cáp điện thoại cho các ngôi làng xa xôi, có nghĩa là điện thoại di động đang trở thành cơ chế chủ yếu để truy cập các dịch vụ thông tin. . | 36 MOBILE DEVICES Figure PCD characteristics A communications and control device is almost always a mobile device. While desktop phones certainly could perform many of the activities mobile phones do the user experience cost of doing so is too high compared to the value obtained. It is far easier to use desktop phones as targeted devices and move the remainder of the communications and control functions to the computer which is likely sitting next to the phone and has better display and input capabilities. Targeted Devices the Information Appliance Targeted devices are designed to help the user do a small number of tasks and to do them well. Their form is thus highly variable and targeted at the exact device purpose. These devices include cameras watches televisions radios music players credit card machines automatic teller machines and bar code scanners. The functions targeted by these devices are frequently included in other devices. For example most people have several clocks and A DEVICE TAXONOMY 37 several more devices that include a clock as part of the function. Clocks are included in most computers kitchen appliances and car stereos as well as being their own separate devices. Cameras are found in security systems computers and mobile phones as well as in the hands of photographers and tourists worldwide. Users will tend to have multiple instances of the functions supported by a targeted device. A targeted device is also known as an information appliance a term coined by Jef Raskin1 to mean a device designed to do a small set of information-focused tasks very well and be closely matched to the needs of the people using them. Raskin notes that these devices tend to be simple always deal with information and tend to share information. Because the targeted device s simplicity of function it cannot by itself provide the necessary ecosystem to support non-trivial data. A music device needs data to play. A camera is useless without a way to share or .

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