http://www.guruenergy.com/#/blog/2009/01/i-cupcakes/Summarise how the interface works.
Apple's iphone is a 3-in-one portable media device which combines mobile phone, ipod and internet access. It uses touchscreen technology as the method of interaction between user and computer. Touchscreens are activated by the touch or removal of a fingertip (or sometimes a stylus) on an active area of a computer screen. They have a layer of capacitive material under a protective coating which reads the users' finger or stylus movements. For example, you can make a phone call on the iphone by tapping a name or number in your contacts list screen display and you can scroll through songs and playlists with the "touch of a finger" (http://www.apple.com/iphone/why-iphone/).
Discuss a situation where the iphone improves the display or interaction over any alternative device.
iphone's touchscreen interface improves access to computing resources for people who have difficulty using other input devices such as a mouse or keyboard. The physically impaired, for example those with fine motor difficulties, would find iphone's touchscreen a much easier control mechanism than alternative keypads or keyboards. The latest iphone, 3G, has also introduced a new app - Voice Control - which, if working as intended, will allow physically impaired people to use their voice to make calls and play music. In addition, by using iphone's Voice Memo, the physically impaired are freed from reliance on textual data input, and can share messages, information etc using easy to access audio input/output technology.
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