We're Jamming: Cell Phone Zappers

We're Jamming: Cell Phone Zappers: "If you burn with anger when you're subjected to the nonstop jabbering of a cell phone abuser, there's something you should know: The technology now exists to zap that person's cell phone signal with the press of a button, so he's left talking to himself.

Cell phone jammers some made to look like actual cell phones are widely sold over the Internet at prices ranging from $300 to $1,500. The low-end models block calls at a range of about 30 feet, and top-of-the-line ones can provide a cell-free zone almost as large as a football field. "