Interactive Design

Interactive Design involves designing interactive products to support people in everyday lives. Interaction Design defines the behaviour of products and systems that a user can interact with. It revolves around complex technology systems such as mobile devices, electronic devices and software. However, it can also involve with other types of products, services, and organizations. Simply said, interaction design identifies the behaviour of the system or product in response to its users.

Reference

"Interactive Design." Wikipedia. 8 Mar 2009 .