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Designing Gestural Interfaces
book

Designing Gestural Interfaces

by Dan Saffer
November 2008
Intermediate to advanced content levelIntermediate to advanced
272 pages
9h 16m
English
O'Reilly Media, Inc.
Content preview from Designing Gestural Interfaces

THE ERGONOMICS OF INTERACTIVE GESTURES

With gestural interfaces, key issues regarding the body must be considered when designing the interface itself and the accompanying interactive gestures that control it.

Hand data from Henry Dreyfuss's book, Designing for People. Dreyfuss created these composite figures from his research and experience with human physiology. Knowing such information helped Dreyfuss (and countless other industrial designers) to design everything from tanks to telephones. Courtesy Allworth Press.

Figure 2-7. Hand data from Henry Dreyfuss's book, Designing for People. Dreyfuss created these composite figures from his research and experience with human physiology. Knowing such information helped Dreyfuss (and countless other industrial designers) to design everything from tanks to telephones. Courtesy Allworth Press.

HUMAN FACTORS

In 1955, Henry Dreyfuss wrote a seminal book on industrial design called Designing for People (Allworth Press). In it, as well as in a book he coauthored with Alvin R. Tilley, The Measure of Man and Woman: Human Factors in Design (Wiley), Dreyfuss demonstrated how the human body should be considered when designing products. To do so, he created two composite "people," Joe and Josephine, who illustrated the common dimensions of human physiology.

Designers need to be aware of the limits of the human body when creating interfaces that are controlled by it. The simple rule of thumb (pun intended) is this:

Note

The more complicated the gesture, the fewer the people who will be able to perform it.

Almost anyone (see DESIGNING TOUCH TARGETS later in this chapter) can tap a button on a touchscreen. But not everyone is going to be able to wave her left hand while ...

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Publisher Resources

ISBN: 9780596156756Errata