This study developed a user focused interface to improve a temperature regulation smart wear system controlled by a textile switch embedded on the outer surface. Designers need to investigate problems between design and consumers to enhance usability. Companies usually launch a final product where problems are resolved by repeated usability evaluation from the initial stage of product development. A textile switch was made all fabric for natural wear ability and designed for easy control and hands-free operation. Usability evaluation for textile switch design was conducted after reading manual without functioning. The survey selected five possibilities (metaphor, consistency, efficiency, flexibility, and aesthetic) from 10 heuristic evaluation assessment criteria of Nielsen(Feedback, metaphor, control, consistency, error prevention, efficiency, flexibility, aesthetic, recover form error, and help) to evaluate with a 5-point Likert-type rating scale restricted by 17 questions that collected specific opinions about user satisfaction. We randomly selected 20 general users to conduct the survey. A textile switch was made all fabric for natural wear ability and designed for easy control and hands-free operation. Usability evaluation for textile switch design was conducted after reading manual without functioning. The survey selected five possibilities (metaphor, consistency, efficiency, flexibility, and aesthetic) from 10 heuristic evaluation assessment criteria of Nielsen(Feedback, metaphor, control, consistency, error prevention, efficiency, flexibility, aesthetic, recover form error, and help) to evaluate with a 5-point Likert-type rating scale restricted by 17 questions that collected specific opinions about user satisfaction. We randomly selected 20 general users to conduct the survey. Textile switch is suitable for the interface of temperature regulation smart wear systems in terms of usability, because it synthetically presented high user satisfaction standards. We modify the final prototype based on usability problems selected through subjective evaluation.

Since the advent of smart phones in 2007, the population of smart phone user has been increasing at stunning rate in Korea. In spite of many benefits such as full internet access, location based service, and easy installation of new applications, many social and medical researches have been reported the concern of overuse of smart phones, especially for teenagers on game and internet addiction. However, most of studies are based on the survey research, so often questioned to be limited number of sample and subjective, which can be overcome by evident-based study. The paper presents a pilot development of Google Android app that provides the 24-hour-measured application usage pattern of smart phone users. A requirement study performed with medical doctors and phycologists are discussed and the key technical and application issues are discussed and their solutions are presented. The system is designed to be extensible so that social network and additional service can be applied based on the user. The measured data is expected to be used for study the cause and treatment of game and internet addiction for teenagers and adults.