The incorporation of digital systems into control of home appliances, Electric systems, home security and monitoring has made it possible to control and optimize them through a smart phone. Signal communication happens between smart devices and controller over a mix of wireless and wired medium using com ports, which means you can control your device, while at home and can also monitor and control them when you are away. That is to say you can still see what's going at home all the time while at office or in the metro. You can know the status of your systems anytime you want, from anywhere.
Com port equipped smart devices and appliances can communicate with each other, paving way for smart management of utilities (Electricity, Water and Fuel conservation). A national grid of such devices will help in conservation of energy, water and other utilities on a national level and an International grid could do much more, may be even establish world peace. Greater ease and more effective home security is just the start. We will be creating the world wide network of smart devices and smart appliances, just the way we have created the world wide network of computers, something like IBM's smarter planet idea. We already have smart Electric grids in place around the world which is helping conserve resources and reduce the waste of Electric power in form of heat, by matching supply with demand with the help of smart meters and other equipment installed alongside. Data is transmitted by smart devices to a hub where a controller processes it using an algorithm and generates control signals for sub controllers for realizing optimal utilization, conservation and security. Google's Nest and start-ups like Canary are already selling popular smart systems creating smart homes. Global smart home market was valued at $20.38 billion in 2014.
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