There are certain situations in which one must make sure that, within a certain environment, no external interferences are present. For example, during a classical music performance, it is advisable to do the utmost in order to have everyone switch off their mobile phones, in order to avoid inconveniences for musicians and listeners alike.
During a confidential meeting or a conference, someone might have forgotten to switch off their mobile phone or, worse, might use it to leak out some information which is supposed to remain private.
In order to protect privacy, silence and confidentiality of your information, it is therefore advisable to take proper protection measures, by using a defensive system such as a mobile phone jammer. A jammer is a device which, when you are not physically able to lay your hands on each and every cellphone to switch it off, works on the radio waves in the room or hall that you wish to protect.
The cellphone jammer can be as small as a pack of cigarettes, and it transmits disturbance waves, which basically hamper all communication with devices present in the area, be they all type of mobile phones (GSM, UMTS and 3G), WiFi networks and Bluetooth connections, within an operating range of about 15 meters.
The owner of a cellphone within this range will not notice the jammer’s disturbing action, but will only be able to notice that his handset has no reach, and he or she will not be able to do anything to communicate with the world outside.