Communication has evolved over the years. Early Stone Age men communicated with signs and drawings, invention of telephone was a big step, and then the internet revolutionized communication. Mobile phones were the next big step that totally revolutionized how we communicate. When Internet and mobile phones joined hands the whole world shrunk within our palms. Communicating between countries and continents has been achieved by a single touch, thus reducing the whole world to a room. The next big step-in this direction is m2m, this is where machine communicate between each other and exchange information. This has been possible with the advent of various technologies.