Wi-Fi is a wireless networking technology that enables computers and other devices to communicate using a RF signal enabling a lot of advanced applications to provide services. Nowadays, Wi-Fi signal coverage is almost a must in any office building or small office home office (SOHO) environment. Home and office networking concept involves the use of wireless sensors/Wi-Fi routers around the house to control and detect signals in the home-setting. In this project, however, RF signals from Wi-Fi NIC and ZigBee motes received signal strength indicators (RSSI) were used as a base feed to our system testbed to detect the human presence inside an indoor home/office environment. Then, a controller is used to switch ON/OFF appliances like air conditioning, lights ...etc. The system testbed doubles as a reliable alarm for physical intrusion detection to secure an indoor perimeter as demonstrated in the paper. This simple, yet cheap, approach to home/office networking promises to save energy and cost in large numbers. It can also be used in many industrial settings including control and security applications.
Habaebi, M. H., Ali, M. M., Hassan, M. M., Shoib, M. S., Zahrudin, A. A., Kamarulzaman, A. A., … Islam, M. R. (2015). Development of Physical Intrusion Detection System Using Wi-Fi / ZigBee RF Signals. In Procedia Computer Science (Vol. 76, pp. 547–552). Elsevier B.V. https://doi.org/10.1016/j.procs.2015.12.342