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About Security Cameras
Security cameras is another term used to describe the technology of CCTV, or closed circuit television. The two are for the most part, synonymous, although the definition of "security cameras" encompasses the modern (mostly digital) developments and advances in CCTV/surveillance technology.
Like CCTV, security cameras are set up to monitor an area for suspicious or odd behavior. A system of security cameras may consist of one camera or many, and like CCTV, sends footage of the recorded area back to a central monitor/recorder. However, where CCTV usually consists of analog or wired digital cameras, security cameras can consist of any monitoring device: wireless IP cameras, webcams, camcorders, etc.
There are several types of security cameras available on the market today. You may recognize some of these as cameras used by retailers you frequent, the company you work for, or maybe even by friends or family. Some of the most popular varieties of security cameras include:
- Bullet Camera - Bullet cameras, like their name suggests, consists of a camera set inside a bullet-shaped container which is then mounted on a wall or ceiling. Bullet are popular because of their integrated construction and easy installation. Bullet cameras may also contain advanced technology, such as infrared capabilities, which allows for monitoring in total darkness.
- Board Camera - Board cameras consist of a small lens mounted on a circuit board. The end user is then free to install the camera in any number of capacities. Since the board camera lens usually has a small focal length, it is widely used in small "spy" cameras, like in buttons, bags or other surreptitious methods. Some manufacturers place board cameras in domes, creating the dome camera that is used widely by large retailers for surveying their store. The short focal length gives a wide angle view and allows a security guard to monitor more space with less cameras.
- All-in-One Systems - All in one security camera systems have evolved from the traditional CCTV line-based systems with analog cameras and recorders, to high-tech digital applications with high-resolution cameras and DVR technology for endless recording. Some of the more modern security cameras have cutting edge features such as facial recognition and LED infrared, which allows for seamless monitoring of a premises.
- PC-Based Systems - Usually consisting of a "webcam," or a small, internet enabled camera that runs off a PC, PC-based security systems are popular among homeowners for applications such as security, motion detection and the increasingly popular "nanny cam." Unlike traditional CCTV technology which does not allow the transmission of recorded footage, PC-based systems house multiple functions thanks to the saturation of the internet. Users may choose to simply record footage from a webcam and monitor it later, or they may broadcast, or "stream" the footage to an outside location like an office or even a mobile phone for easy monitoring. Users may also make the stream open for other viewers to use, which takes the use of this security camera beyond the bounds of the traditional definition of CCTV.
- Decoy Cameras - Decoy cameras are a popular and affordable option for homeowners and small business owners to detract intruders from any possible theft or crimes. Usually, decoy cameras are made to look like "the real thing," even down to a flashing LED light. However, research has shown that since security cameras are more effective for identifying, capturing, and convicting criminals (as opposed to deterring crime), dummy cameras have not been shown to be terribly effective.
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