Wi-Fi is a way of connecting a Wireless Local Area Network. One use is accessing the internet without using wires. Wi-Fi or WiFi is a local area wireless computer networking technology that allows electronic devices to connect to the network, mainly using the 2.4 gigahertz UHF.

Closed-circuit television (CCTV), also known as video surveillance, is the use of video cameras to transmit a signal to a specific place, on a limited set of monitors. It differs from broadcast television in that the signal is not openly transmitted, though it may employ point to point (P2P), point to multipoint, or mesh wireless links.

In the fields of physical security and information security, access control is the selective restriction of access to a place or other resource. The act of accessing may mean consuming, entering, or using. Permission to access a resource is called authorization.

Organizations of all sizes use time and attendance systems to record when employees start and stop work, and the department where the work is performed. However, it's also common to track meals and breaks, the type of work performed, and the number of items produced.

Point-to-point and point-to-multipoint connections are secure closed data networks between specific geographical locations, which allow for connecting core facilities and satellite offices, as well as communication between separate enterprise facilities. Point-to-multipoint communication is a term that is used in the telecommunications field which refers to communication which is accomplished via a specific and distinct type of one-to-many connection, providing multiple paths from a single location to multiple locations. Point to Multipoint have large number of nodes.

A home theatre or home theatre is a theatre built in a home, designed to mimic (or exceed) commercial theatre performance and feeling, more commonly known as a home cinema. Today, home cinema implies a real "cinema experience" at a private home. A video projector is an image projector that receives a video signal and projects the corresponding image on a projection screen using a lens system. Projectors are widely used in many schools and other educational settings, sometimes connected to an interactive whiteboard to interactively teach pupils.