Advertising companies already have this kind of tool and they don't want to expose it to the whole world, which is unethical act of them. When entire information has been collected through user`s PC, a unique finger printing created which will give you information, when next time that user will visit your site again. Isn`t it the good thing about this tool, which can tell you anything about the visitors and you can be ready for any alarming upcoming act of them. Tool is very helpful to recognize particular system configuration. Your browser will remain safe from crazy users and visitors.