Applications, benefits and relations between: 1/Intelligence, 2/Disabilities and 3/Health. Smart citizen platform/system could convert in a way of relevant information. It could improve the quality of life as well as the smart citizen security. It could convert in a special data capture. In this sense, smart citizen platform could become in an accurate tool. It could inform about temperature changes, moisture changes or light changes. Smart citizen platform could be assistant tool for people with disabilities. Somebody with an olfactory handicap could not detect some strange smell as well as a strange situation. The fire smell could be detected by the smart citizen sensors. In this way, it would be a skillful informative tool for people with disabilities.