Mobile phones are everywhere these days. According to the Cellular Telecommunications and Internet Association, almost 195 million people in the United States had cell-phone service in October 2005. And mobile phones are even more ubiquitous in Europe.

It's great to be able to call anyone at anytime. Unfortunately, restaurants, movie theaters, concerts, shopping malls and churches all suffer from the spread of mobile phones because not all cell-phone users know when to stop talking. Who hasn't seethed through one side of a conversation about an incredibly personal situation as the talker shares intimate details with his friend as well as everyone else in the area?

¬While most of us just grumble and move on, some people are actually going to extremes to retaliate. Mobile phones are basically handheld two-way radios. And like any radio, the signal can be disrupted, or jammed.

In this article, you'll see how to use cell-phone jammers and learn about the legality of their use.

USING A mobile phone jammer

Because jammers now come in much smaller sizes, they are very easy to carry around. Portable personal jammers will fit into the palm of your hand or easily slip into your coat pocket. So the next time someone on your commuter bus refuses to shut up, you can just reach into your backpack and turn on a temporary "dead zone" with your jammer. Then get back to some nice peace and quiet.