Telephone tapping is unwarrantable, which filches the privacy. However, in today's society, people pay more attention to privacy security, which promotes the emergence and application of mobile phone jammer.

Smaller mobile phone jammer is battery operated. Some look like cellphones and use cellphone batteries. Stronger devices can be plugged into a standard outlet or wired into a vehicle's electrical system. The jammer's effect can vary widely based on factors such as proximity to towers, indoor & outdoor settings, presence of buildings and landscape, even temperature and humidity play a role.

There are concerns that crudely designed mobile phone jammer may disrupt the functioning of medical devices such as pacemakers. According to some of our researches, we have noticed that most of the people out there think that operating a signal blocking device is a pretty hard job while this is not the case. As a matter of fact it is important to know that most of those frequency zappers have only one button and thanks to it they can be easily operated.