Interaction Design

The design of those aspects of a system that the user perceives and communicates with.

Hypothesis: in new media the system is interactive
How to make the interaction efficient?

• Design for unstable media

• HCI Human Computer Interface

• Man-machine interface

• Information engineers

• Usability

• Usability and Design of the Human Computer Interface (there is a DCS course of this name)

Usability

The usability of an interface is the measure of the effectiveness, efficiency and satisfaction with which specified users can achieve specified goals in a particular environment with that interface

Sometimes really easy to measure: "How much time do you need to program your VCR?"

video cassette recorder