Initially, its were police forces and military forces who began to use specific devices to block all the radio signals in determined area to preclude opposing side from applying communication devices. The principle of disrupting the radio signal is very simple. Blocking equipment transmits radio signals of certain frequencies and thus it makes enough noise to disable all communication gadgets. In the course of time the demand for such devices among citizens increased greatly and manufacturers decided to start selling these jammers to non-militaries. Nowadays such disruptors, also known as jammers, are in great request and have a lot of usages. The variety of jammers is rather great so you can easily find the proper type of jammer to interrupt any radio signal you need. The most commonly used jammers are the ones that disrupt GSM, GPS and Wi-Fi bands.
The attitude to such type of equipment varies greatly in different countries. In some countries its even forbidden by law to buy cell phone jammers of any type. Notwithstanding disruptors are widely used by ordinary citizens. Especially blockers are greatly in demand in large cities and megalopolises.
Regardless of all the laws, disruptors are in great request because they can be used in lots of cases for example:
1. To jam cell phones in theaters, cinemas and other public places
2. To block mobile phones in health care establishments
3. To defend convention spaces from commercial espionage
4. To defend work places from spying gizmos
5. To achieve absolute informational safety
6. To prevent spies from spying on you and detecting your location
7. To prevent detonation of several kinds of bombs
8. To preclude cheating at different tests and exams
9. To prevent falsifications of voting process during some elections
10. To defend militaries from homing missiles
11. To help police in fighting the bandits
Notwithstanding, few disadvantages of disruptors can also be names. Here are some of them, jammers:
1. Can be used during carjacking
2. Can be used by bandits in various ways
3. Break the rights of communication operators
4. Make impossible to call 911
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