In coming years, Data generated by IOT devices are predicted to increase more than the available capacity to store, and all data that's generated is not useful for analysis. Only limited part of it is useful. 

According to Computer Business Review(CBR) magazine, there are some data generating areas. It is important to know what data from which area is precious and what is not. Following are the ten of the biggest data generating areas. To know more about these areas, read: 

http://www.cbronline.com/news/internet-of-things/10-of-the-biggest-iot-data-generators-4586937