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User needs due to highly mobile and portable environment should be considered when providing contents. |
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Convenience and speed should be the main focus in order to reduce user expenses. |
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Physical movement of the users should be minimized. |
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Contents should avoid user feedback in interface, or only require simple key inputs. |
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PDAs require many decisions for user inputs ; therefore highly intuitive metaphors are required. |
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PDAs, unlike most other media, requires much time for decisions; therefore, simple and clear menu, navigation, and labeling should be provided. |
