Any one using personal cell phone jammers?

This is used to keep those annoying cell phone users who shout in to their phones ignoring every body who is in the neighborhood. The following article explains the pros and cons of the device here.

http://www.nytimes.com/2007/11/04/technology/04jammer.html?hp

This is a nice invention. I am probably going to get one myself.

 

I thought they were illegal in the usa?

 

They are illegal. But still there are people who are using it.