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INTERACTION DESIGN PRINCIPLES FOR INTERACTIVE ...

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User tasks influence which device is appropriate fro particular types of<br />

information<br />

Device coordination is critical. Be sure that the information on different devices is<br />

coordinated, consistent, and up to date<br />

Combine the coordinated information guideline with the appropriate device<br />

guideline. Information about the same thing can be presented in more than one<br />

way. For example, information about a room can be conveyed in a picture, a text<br />

description, or a floorplan graphic. Navigation through a house video is controlled<br />

on a schematic floorplan displayed on a PDA<br />

Source: Robertson, S., Wharton, C., Ashworth, C., & Franzke, M., 1996.<br />

There is little doubt that new technologies will continue to change the ways we<br />

navigate through iTV systems: “in the future, we may also see voice commands via one’s<br />

remote control or cell phone, speaker-driven commands for sound-sensitive TVs, touch<br />

screens on consumer televisions, lab devices for more complex interaction, and more”<br />

(Swedlow, 2000). As this occurs, design standards must continually be formed and<br />

redefined.<br />

ITV represents a new medium and a new space for expressive communication,<br />

one that is distinct from the viewing and computing platforms that have existed to date.<br />

The TV itself has fundamentally different display characteristics from conventional PC<br />

monitors, which are still different from mobile devices. As a result, good convergent<br />

design practices will be essential in order to create meaningful, compelling, and<br />

interesting interactive experiences. The principles presented in this chapter are a starting<br />

point. They serve to orient interaction designers and producers of iTV to a set of issues<br />

that any specific design may need to explore in greater detail.<br />

175

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