In order to possess security in the most uncertain daily life, door access system has an important role to play. There are many situations where it is used to save information – important to a person, a project, a house, a company even. This is used somewhere to save things which are valuable to different levels of people. Now, as this has many usages and many implementations, we are going through one by one.

Mostly used door access control systems are using swipe cards or PINs.

There are situations where close circuit cameras are used for access control guides. For opening door of a car, remote control key-press is now sufficient. This can also be treated as a revolutionary technical invention. In case of houses biometric fingerprint door locking system is being used. Here finger prints are used as personal identification and as we know that fingerprints cannot be copied, its indeed a secure and advanced type of security. In banks, the vaults are secured by rotational wheels used as the access system to open the vault doors. Different numbers of rotations in different directions are the distinguishing factor for accessing different vault doors.

Office doors are more sensitive to individual. Here every door cannot be opened by everyone. A door is getting opened by a person or a group of people who are authorized to enter the room. Here their employee numbers are getting identified by swiping off the identification card. Most of the cases card is getting punched. In that case, in and out times are recorded. Locking system is the oldest system used for years in different countries. But if the keys were stolen, then the only to way to open the door is to break it. As this option is not acceptable and feasible always, different new systems were evolved and are currently used in different houses, banks, offices and so on.

The full form of PABX is Private Automatic Branch Exchange, which is mainly just another term for a telephone system and also known as a switchboard. These units are generally used as an internal telephone system in offices and business world. PABX telephone systems will often have a lot of internal lines connecting to one main switchboard and it is also a cost economizing device as the business doesn’t have to pay the line rental for several lines.

A PABX telephone system is programmed in such a way so that it greets each caller with an automated message before the call goes through to the assigned line. PABX machines are now being modernized in that now they can be controlled by a computer system which tracks all incoming and outgoing calls of the clients. Hence, basically, the PABX is an internal telephonic network, which covers the whole world.

PABX machines are excellent for businesses world because as it can be used as auto attendants.  By doing this, the call will be handled to a certain extent even if there is not any person to answer the calls. PABX systems can also be used to conduct the conference calls, which is highly useful if the people do not have time for a direct meeting.

In conclusion one can easily see that a PABX can be of great use to a business purpose. There are many telecommunications companies that sell PABX systems and offer special deals. There are numerous PABX suppliers one can find according to their requirement over the internet where without wasting time one can gather the entire knowledge of this system. PABX systems can be quite expensive, and therefore there are various packages available now a day’s which will allow the company to pay a monthly or yearly fee to pay off their PABX system.

Home burglaries — a threat to the world — a threat to the social security system — the issue is addressed by using alarm system in some places where important valuables like money, antique pieces, and above all human lives needs to be secured. In the beginning of burglar alarm systems, closed circuit cameras and video recorders are used as security measure. But this is a expensive process and needed to be kept watch on every time which is normally not possible. And that made the invention of new electronic gadgets taking up the responsibilities of a safeguard and without any need of continuous vigilance.

Home burglar alarm systems are mainly of two kinds –

1) Wired and

2) Wireless

In wired system a central panel of device is connected to various accessory devices like — motion sensor, hidden sirens, ultrasonic sensors, infra red sensors, sound sensors and so on. It is indeed a very high quality process to get rid of the burglars as it also has battery backup as in case of wire damage or cutting of wires. Though it’s still really very popular, but its installation causes a real inconvenience for the inmates of house. The device is also very tough to set up. And these problems give rise to the wireless system.

The wireless system is easy to install, portable and can be used to safeguard a large area as it doesn’t possess wires. It activates by password system which can be set manually. And thus it is safe too. Usually a home burglar system possesses the following parts –active eye motion sensor, door and window sensor, eagle eye motion sensor, emergency panic button, heart shaped personal assistance pendant, outdoor motion monitor with floodlight, power horn siren, remote chime, security motion detector and security hand held remote control. And with all this advanced technological and electrical devices, it does make home a safe place and keep burglars away.