Wireless camera with or without digital video recorder (DVR) forms an integral part of a comprehensive home/office security system. Even if used as stand-alone, the wireless camera presents itself as a serious deterrent to thieves and criminals. Apart from security reasons, the wireless cameras are also used for situation or asset monitoring purposes.
During the past few years, wireless cameras have become increasingly popular. Traditionally, wired cameras have been in use (to a very limited extent). This was partly due to the high price of wired cameras, and partly due to the need to lay wires from camera to image/video recorder and/or monitor.
With the advent of new and cheaper technologies in video processing and memory enhancement, it has become much more feasible to set up a low-budget wireless camera for home and office surveillance.
Certainly, the advancement in technology and price cut-down applies to wired cameras as well, but use of inexpensive wireless technology gives an edge to wireless cameras over wired devices because cost of copper wires and running them from point A to B is eliminated. Also, wires are an easy target and can be attacked if visible. Wires can also point to the recording device, which may become subject to attack or manipulation. These issues are taken care of by the wireless cameras, as there are no wires carrying the video signal, and the recording device can be hidden, or even not present within the same premises.
Similar to wired cameras, wireless cameras can be manipulated by distorting the frequency at which the camera operates. However, it is possible to set up a system that operates on two different frequencies, so that if one frequency is distorted or blocked, the other frequency keeps relaying the image/video signals.
Wireless cameras are also easy to install and easy to displace if required, as the cabling overhead is absent.