This is true across the spectrum of things that can be monitored by sensors" These wireless sensor networks in the past have relied heavily on batteries that need to be changed by a human. Energy harvesting technology combined with solid state batteries power an increasing number of consumer and industrial products that are untethered or need to become disconnected from electrical outlets. The markets for wireless sensor networks at $552.4 million in 2012 become very big, very fast reaching $14.6 billion by 2019. Market growth is dependent on emerging technology. As the wireless technology, the solid state battery, the sensor technology, smart phone technology and the energy harvesting technology all become commercialized, these devices will be used to implement wireless sensor networks. The smartphone sensors networks markets will be driven by the adoption of 8.5 billion smart phones by 2019, creating demand for apps that depend on sensor networks.
