Why do you need stubs for communication?

 

A cell signal jammer, popularly known as a GSM jammer, is a device that completely blocks mobile communications within a certain radius. And today we will talk about these wonderful devices that can come in handy at any time.

Such devices are used in the subway to protect against terrorists, in exams in schools or in special government institutions. Therefore, we can conclude that signal jammers are very useful and necessary for many devices.

How do cell phone jammers work, why are they needed, where can I buy such a device, and is it legal to use it? Today we will figure it out.

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 History of appearance

The first communication jammers were used by the military, as well as employees of strategic facilities.

The military, using such devices, protected themselves from wiretapping and prevented the enemy from transmitting information. And employees of strategic facilities eliminated interference for aircraft.

The device first appeared on the markets only after 2001. It was the King of Jordan, Abdullah II, who contributed to the creation of such a useful device.

In churches, parishioners did not turn off their cell phones, and the constant noise of calls distracted the king from prayer. He decided to address this problem to specialists.

In 2001, Abdullah II came to Image Sensing Systems with an unusual order. He asked to make a device that would block the cellular signal in the temple. Soon, engineers produced the required device - it became the first jammer for cell phones. And after a while, the problem with phones was solved, and stubs began to become very popular.

 Where and why are they applied?

Now, mobile signal suppressors are most often used to protect information from leakage. Phone jammers are installed in large corporations, in government buildings, at government facilities, in places of detention.

To eliminate interference for overly sensitive electronics, such devices are used:

- In hospitals, polyclinics and sanatoriums;

-In research laboratories;

-In service centers.

Some cinemas, theaters, museums and concert halls also install mobile silencers. Everything is simple here - if the phone cannot be reached, it does not make noise and does not interfere with people around to relax.

Absolutely everyone will need such a device. The purposes of its use are different. Someone wants to jam the signal in a public place where silence is required. Someone wants to make it impossible to cheat on the exam and use stubs. Therefore, you need to know where and how to buy such a device.