Nowadays, technology is developed quickly. The more time passes, the more the technology is improved in an exponential way. Undeniably, technology is around us as one of the important objects for living in daily life. For example, we communicate with one another by phone instead of letters. We use many kinds of vehicles that fasten transportation. All technology is made for helping the human more convenient, even safer. The technology is used in cases of increasing security. Somehow, the human has a limit to work, technology is used instead. For example, the security camera expands the view that gives convenience to the security guards. Moreover, beyond expanding the view of the security camera is a cellphone tracking that monitors what people say. Even though this technology is helpful for security, people are concerned if these technologies affect them worse.