The Internet of Things

When I first attended a presentation on “The Internet of Things”, I was not very excited. It turned out to be nothing more than a glorified description of sensor networks. Though this phrase was first used in 1999 as reported in an article in RFID journal, it has been interpreted in many different ways by different people. Trying to find a way through that maze of descriptions is really difficult. However, after reading a lot about it and based on my own understanding of embedded systems, sensor networks and systems engineering, I would like to share what it means for a non-technical audience. I find it best to explain through examples. Take the case of a smart home. You can control the appliances in your home while driving your car as there is a communication network that links you up with them while you are driving. Your smartphone connects you to the internet where you can shop, play games together with your friends and download apps that make your phone more versatile. It syncs with your email accounts and any sync enabled application, helps you make payments on the go (mobile banking), provide access to your data anywhere through cloud based tools like dropbox etc.. The GPS on your phone helps you find your way in a city by showing you on a city map that has been downloaded on to your phone using a wi-fi or similar data connection. You can drive almost safely even in a city new for you! These examples demonstrate an interaction between humans, electronic devices which may have sensors, mechanical devices and the traditional internet. By traditional internet I mean the internet which was seen initially  as just a repository of information and which has now grown to include processing engines like  those which facilitate “voice enabled search and SMS” on your smartphones, storage and compute space for cloud applications (like Amazon’s EC service) etc. Thus the “Internet of Things” is nothing but a network where human actions, electrical and mechanical devices and the internet come together to interact in a meaningful way. The scope of this interaction can be as varied and wide as possible depending on the intended result.