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Have you ever been in a situation or in a location where you feel your mobile signals do not work anymore or even the Bluetooth or Wi-Fi signals on your mobile or laptop has gone dead? Beware; you may be in an area where there are cell phone jammers placed to block your calls.

 

Initially these were introduced in the market to provide relief from unwanted calls like advertisement calls and to avoid people talking over their mobiles at certain public places like movie theatres or libraries where they are expected to be quiet. There are many people who constantly use their mobile phones irrespective of where they are and also speak loudly creating a nuisance for everyone else present there. This is when cell phone jammers were being installed in public places like hospitals, libraries, theatres, religious places like churches, museum etc. But soon people started misusing this technology for improper purposes like theft or kidnapping. Robbers would use a jammer during robbery so that the people in the house cannot call the police or neighbors for help.

 

Due to this reason and various other reasons these cell phone jammers at https://www.thesignaljammer.com/categories/GPS-Jammers/ were then banned in most of the countries since these were interfering in normal transmission of radio waves. Due to this interference, many a times emergency calls made to doctors, hospitals or police where being barred. In most countries, possession of a jammer is still allowed but usage in public places without prior permission from government is an offence. Two more places where these cell phone jammers are legally used are banks and jails.

 

Due to many security reasons these are particularly used in these areas to block unwanted mobile usage which are one of the main devices during theft operations. Also, these are made legal for military usage and during military operations. Whatever the case, these powerful devices at this link are handled with care so that it does not interfere with public regular usage of cell phones to avoid blocking emergency calls.

 

Despite this fact that usage of jammers is banned, these useful devices are still widely available over various web portals and can be shopped online. On top of this, there are various online deals that are extremely inviting since the prices offered on these portals are quite affordable. A mobile phone jammer usually looks like a mobile phone itself and needs to be first charged before usage. Also some jammers come with frequency filters which are used particularly to block certain frequencies only without interfering with other frequencies. This post at http://money.cnn.com/2014/06/16/technology/security/comcast-wifi-hotspot/ should be interesting!