What is User Interface? (UI) • A common boundary or surface between the interactive system and the user • All elements which provide communication between the interactive system and the user
What is User Interface Design? • User interface design is the process of supporting the tasks (goals) of the user, ideally in a friendly and articulate manner
What about User Experience (UX)? • “A person’s perceptions and responses that result from the use or anticipated use of a product, interactive system, or service.” –ISO9241-210
What is Usability? • Usability means that a person using a system finds it easy to understand and use • A usable system allows a person to focus on their tasks, and not on the system itself • A usable system most often does what a! person expects
What is a Design Pattern? • It’s a design solution to a recurring problem • It’s also about not reinventing the wheel. • People want to use what they have learnt already using the phone
Some advice… • Don't port the UI from other platforms • Don't override the behavior of system buttons • Know your user and get feedback from him • Test on real users, early and often • Do what the user expects • The most common operations should be visible • Don't reinvent the wheel
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