Design in the Dark yielded the Sky Handset (19 May 2004)
Knight described how the first prototypes of the handset were cut from foam after anthropometric data on hands had narrowed the range of sizes and shapes deemed viable. These models were given to people to size up and select their favourites. Testing went on in the dark so that people could concentrate on shape and feel without the distortion that visual impressions lead to. Researchers also investigated the ease with which back could be distinguished from front as this point.
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