Wi-Fi is the name of a popular wireless networking technology that uses radio waves to provide wireless high-speed Internet and network connections. Wi-Fi works with no physical wired connection between sender and receiver by using radio frequency (RF) technology, a frequency within the electromagnetic spectrum associated with radio wave propagation. Wi-Fi is supported by many applications and devices including video game consoles, home networks, PDAs, mobile phones, major operating systems, and other types of consumer electronics.

video surveillance

Video surveillance systems monitor activity in public areas, businesses or commercial buildings for real-time or later review. Some video surveillance systems include sound while others record video only. Video surveillance systems can also be used inside and outside schools and private residences as an extra measure of security. There are a myriad of different systems with varying levels of sophistication within a wide price range. Video surveillance systems are increasingly being used in security systems and with good reason. Even the presence of video cameras acts as a deterrent to potential criminals. Possible dangers are also detected at any early stage. Appropriate and rapid intervention will enable damage at least to be contained. Given the ever-growing sources of danger and increasing losses, video surveillance is an extremely valuable and economical means of improving the security of people, buildings and valuables.