Technology Is Geared Up To Keep You From Harm’s Way

July 10, 2013

Motivation is the main force behind any kind of progress; if we look at the development at our security systems, whether it is our homes or our nation, we will see so many things have come up to subdue our sense of insecurity. And surprisingly enough, these technological inventions are not limited in providing us physical security but also have extended their super efficiency to the progress of various branches of science. Security checking at airports, stations, shopping malls, bus terminuses, cinema halls and even in our own offices is a very common nowadays. But have we ever wondered how do these things work?

There were incidents like 9/11 that shook the world; naturally, the governments, of every country had to make sure that the countrymen are safe. Moreover, we also need some kind of personal security as the crime rate is on a rise in every corner of the world. To solve this situation our technologists and scientists developed two remarkable things, Sensors and detectors.

Home Safety

In train stations, airports, shopping malls we have to pass through a metal detector; it takes a fraction of second to pass but it is enough for the detector to determine whether one is carrying anything harmful or not. The metal detectors have oscillator that produces alternate magnetic field and whenever any object is in its close proximity, it picks it up within a fraction of seconds. The use of hand held metal detectors and doors are used extensively by law enforcement agencies and army. Private security companies are also using these technologies to their advantage.

The motion detection technology is a news of past in our wireless communication development. The day smart phones came into existence these motion sensors were already there. The games we play tilting and turning the mobile screen is nothing but motion sensors. We can put our phones in silent mode just by flipping its screen downwards. Various companies are coming up with unique ideas to secure our personal data our PC and laptops. Companies are installing voice recognition devices and thumb impression reader to identify the true user of the computer. There are smart phones where you can change an image or go to the next music file just by shaking the device.

Metal Detector

But all these fun stuff turn serious when used in other fields. Infrared is one of the most known imaging technology that is used in today’s surveillance. Infrared is actually works as a thermograph. It can identify the temperature fluctuation and by doing so it helps to create images by showing temperature hot spots and cold spots. It is mostly used in the dark or at night. The modern Close Circuit cameras are equipped with thermal image sensors. This technology is even used to keep a track on wildlife.

Computed Tomography, more commonly known as CT, is another kind of technology that is being used for long. We are familiar with the term CT scan where we get an x-ray like image of our brain and body parts. In tomography a wave is released which can penetrate any surface and using the ability of sectioning it produces an image know as tomogram. The tomography is mostly used in airports to check the luggage.

Everything existing on earth gives out some kind of electromagnetic waves. Microwave sensors are used to produce those electromagnetic spectrum images. By analyzing the microwave lengths one can find if anything is hidden in someone’s bag or body.

Camera

Ultrasonic sensors work like a radar system. It can pick up radio and sound waves and can help to determine the threat level. All these technologies are not only used in military operations but also are becoming common in our home security systems. The cameras installed at our homes or on the streets are enabled to create an image of different kinds.

No man or animal on earth has similar retina or thumb impression. Using this unique thing retina scanning and thumb impression reader have become quite an important part of security technology. Using very subtle infrared one can identify the biometric structure of the retina or thumb and the device uses that impression as a password. So no one, except for one person, can access the data or information or any other things.

Motion sensors are even used in homes to; to save the electricity the sensors are used. Like, if someone enters a room it will get illuminated and the moment the person leaves the lights will turn of automatically. This technology is being used even in toilets, wash-basins faucet systems to save water. So, all those security is for our well-being. Technology is guarding us with all its eyes.