Similarly, sophisticated access control systems are being deployed and maintained by private, public and government organizations to limit access to secure areas. Driving the growth of video surveillance and access control system installations-in addition to increased security concerns- are the technologies that have improved security systems to the point where they are affordable, reliable and cost effective. Industry experts have stated that the digital video and off the shelf software are spurring rapid adoption of integrated and networked security systems with remote monitoring. The use of biometrics such as digital fingerprints, hand or retinal scans, and infusion of smart cards in providing access control are also becoming mainstream.

For any modern home or office, electronic security and surveillance products are playing a very important part. The basic design of a security system begins with analyzing the needs of the inhabitants, surveying existing technology and hardware, reviewing system costs, considering monitoring choices and finally planning the installation. Security system sensors are available that are designed to detect sound, window and door intrusion, air movement, body heat, motion and other conditions that indicate an intruder is present. A properly designed security system should also consider the location of valuables or similar items that are to be protected, how the system is to be controlled, adequate smoke and fire alerting sensors, and the type of emergency response required. Fire detection sensors are available in two categories called heat detectors and smoke detectors. They operate on a principle of detecting heat rise or smoke in the home or office and can be hardwired or battery operated or wireless.