Interaction designer conceptualises, develops and refines interface and usability of products, systems or services, through various iterative processes. He/she takes into consideration the practical, experiential, affective, meaningful and valuable aspects of human and computer interaction and product ownership, as well as the person’s perceptions of system aspects such as utility, ease of use and efficiency, and user experience dynamics. He/she analyses users’ behaviours, attitudes, and emotions about the usage of a particular product, system or service.