Mobile phones have two sensors: a camera and a microphone. The widespread and ubiquitous nature of mobile phones around the world makes it attractive to build a large-scale sensor...
: Relatively higher cost, worse extensibility of the monitoring points and weaker mobility are those disadvantages that widely exist in the wire data collection system of the tradi...
Mobile devices such as cell phone, PDA and smart phone have been so popularized that they are to be a necessity for everyday life. These mobile devices can be very useful tools to ...