Surveillance technology has changed dramatically over the last few decades. It is now possible to capture video in real time and store it on a digital storage device. DVRs have made video surveillance more accessible by providing higher quality video, better storage space, and a variety of features. While early surveillance cameras used analogue cameras and hard disks, modern systems use digital cameras and networked analytic systems. This enables cameras to be placed virtually anywhere, as long as they have network connectivity. For details on CCTV Swindon, visit APM, suppliers of CCTV Swindon systems.
China has been a significant buyer of surveillance technology, and in response has built a robust domestic manufacturing base. China also realised that there was a market for surveillance technology outside of its borders after the attacks of 9/11. After the events of 9/11, many Western nations focused on surveillance technology to monitor and identify terrorism threats. Greitens’ research found that at least 80 countries had purchased surveillance technology from Chinese firms. As you can see, the surveillance industry is extremely important for matters of national security as well as home or business security.
Electronic surveillance is often associated with closed-circuit television (CCTV) cameras. The United Kingdom, for example, has a network of over 4.2 million cameras, which is about one for every fourteen citizens. In 1999, the average person in an urban area had his or her image captured by 300 or more cameras. Staggeringly, Shanghai in China has over 4,000 cameras per square mile and almost 11 million in total across the city.