Quadcopters, today, have become a rage amongst children as well as grown-ups. In the initial stages one finds it very fascinating and interesting. The deeper you go in the technology, one finds that it has unlimited scope and application in our lives.
In India it is mostly used for shooting and filming from high grounds. Whereas, in the West it has already been used to deliver Pizza, Books and various items thus replacing courier boys. Monitoring enemy region is a defence applications whereas keeping an eye on your children in playground or in open is a parental application. Your thinking is limit for applying the Quad copter in various situations.