We use so many appliances at home that often it becomes a headache to keep track as to whether everything is switched off or not, especially after stepping out of the house. Home automation or smart home is a key that keeps you away from all these worries by automating the appliances and connecting them to a common network.It is basically a home where everything including the lights, alarm clocks, television, doors, windows, blinds, heating and cooling systems can talk to each other. Not only this, all such automated devices also receive as well as interpret their owner’ instructions and then behave accordingly. The success of home automation, to some extent, relies on the availability of smartphones as they can be easily connected to other devices through the internet and are highly portable.