Mobile phones are often used in situations in which user's attention is diverted away from the screen. Talking on the phone while walking or driving a car is easy, but dialing a number without looking at the screen or keypad is much harder. We developed two different interaction models to support eyes-free use of number dialing task. Speech and non-speech sounds were used as a substitute for visual feedback. We present prototypes of interaction models running in a mobile phone. Results from a usability study showed that audio feedback is efficient and participants preferred a simple interaction model for eyes-free use.
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