The document provides guidance on human-centred desing activities throughout the life cycle of computer-based interactive systems. It is aimed at those managing design processes and provides guidance on sources of information and standards relevant to the human-centred approach. It is concerned with both hardware and software components of interactive systems. It addressess the planning and management of human-centred design and does not address all aspects of project management. The standard outlines the reasons for adopting a human-centred design process. These can be used to provide a rationale for the use of human-centred methods, or to determine priorities for resource allocation during a project. It also gives guidance on the principles of human-centred design and lists the issues to be considered when planning human-centred design activities and discusses how these should relate to system design goals. The core of this International Standard is the description of each of the four essential human-centred activities which should take place during the design process. Additionally, it gives further guidance on reporting human-centred activities. The document defines the following terms: interactive system, prototype, usability, effectiveness, efficiency, satisfaction, context of use, user.