Commercial
Surveillance is the monitoring of behavior, many activities, or information for the purpose of information gathering, influencing, managing or directing. The act of watching a person or a place, esp. a person believed to be involved with criminal activity or a place where criminals gather.
Security cameras are available in a wide range of styles and features, and they are a common component in a security system.
Internet security systems or IP cameras use the Internet by networking to send and receive data. They are fairly easy to install and connect to your system, and you can view live camera feeds at any time with free mobile apps for smartphones and tablets.