Cell phone jammer is a device that emits signals in the same frequency range that cell phones use, effectively blocking their transmissions by creating strong interference. Someone using a cell phone within the range of a jammer will lose signal, but have no way of knowing the reason.

The phone will simply indicate poor reception strength. With the ubiquitous use of cell phones, a backlash has occurred. While some people practice good cell phone etiquette, many others noisily discuss their private, professional or mundane business in public areas, forcing everyone nearby to listen. On trains, subways, buses, in grocery stores, shopping malls and cafes, people are aggravating fellow citizens with their non-stop chit-chat. This has caused some people to take matters into their own hands.

With a jammer in purse or pocket, phones can be turned off with the flip of a switch — and they won't be able to reconnect as long as the device is activated, unless they move far enough away from the source. It seems a tidy solution, however, there's a problem.

Cell phone jammer are illegal in most countries, except to military, law enforcement and certain governmental agencies. - See more at: http://www.jammersales.com