You must heard a word "Spy". Its mean to detect someone wisely. Now technology got so advance.For this in market you will see many gadgets like CCTV camera and other many tools like it. But what you will do If someone betray you in business field or love path. For this new technology named "Spy app" has introduced in market. Check the site -> http://thetruthspys.com/how-to-install-mobile-spy-on-android-with-thetruthspy/
and explore more features of this amazing technology.