Video door-phone is a stand-alone intercom system used to manage calls made at the entrance to a building with access controlled by audiovisual communication between the inside and outside. The main feature of video door entry is that it enables the person indoors to identify the visitor and, if they wish, engage in conversation and/or open the door to allow access to the person calling.

The specific nature of today's biometric systems is associated with a specific use of the term "biometrics." In general, biometrics is any use of biological data in technology. Governments, businesses and organizations can use biometric systems to get more information about individuals or about a populace as a whole. A biometric system will involve running data through algorithms for a particular result, usually related to a positive identification of a user or other individual.

In the fields of physical security and information security, access control is the selective restriction of access to a place or other resource. Designed to work together seamlessly, Access Systems' products provide you with the technology you need to deliver sophisticated security solutions—from the simplest to the most challenging. Generally defined its apractice of restricting entrance to a property, a building, or a room to authorized persons. Physical access control can be achieved by a human , through mechanical means such as locks and keys, or through technological means such as access control systems like the mantrap. Within these environments, physical key management may also be employed as a means of further managing and monitoring access to mechanically keyed areas or access to certain small assets.

Home automation is the use and control of home appliances remotely or automatically. Early home automation began with labour-saving machines like washing machines. Some home automation appliances are stand alone and do not communicate, such as a programmable light switch, while others are part of the internet of things and are networked for remote control and data transfer. Hardware devices can include sensors, controllers, actuators, and communication systems. Remote control can range from a simple remote control to a smartphone with Bluetooth, to a computer on the other side of the world connected by internet. Home automation systems are available which consist of a suite of products designed to work together.

A security system needs regular maintenance to make sure it functions optimally. This involves inspecting the individual components, changing the batteries when needed and ensuring that all the individual parts communicate effectively with one another. While your main control pad and a monitoring service help you keep track of system performance, you should conduct your own weekly and monthly inspections as well.