Comprehensive Review on Wireless Sensor Networks

Wireless Sensor Networks (WSNs) consists of low power, low-cost smart devices which have limited computing resources. A lot of real world applications have been already deployed and many of them will be based on wireless sensor networks. These applications include geographical monitoring, medical care, manufacturing, transportation, military operations, environmental monitoring, industrial machine monitoring, and surveillance systems. In this paper, we present a snapshot of the wireless sensor network architecture, security requirements and obstacles of sensor security.