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 citizen security. 1/Smart citizen platform could be assistant tool for police and intelligence services. It could convert in a special data capture for solving criminal acts and robberies. In this sense, smart citizen platform could become in an accurate tool. It could inform about temperature changes, moisture changes or light changes. 2/Smart citizen platform could be assistant tool for people with disabilities. A symbolic examples could be: A person with a visual disabilities could Know the weather in your neighborhood using the smart citizen platform. 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. 3/Smart citizen platform could be assistant tool for nurses and doctors. They could know the moisture, temperature and other city-life concepts. Then nurses and doctors could advise about life habits, life behaviour or adequate travels.