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Gadget Savvy: Cell Phone Jammers Quiz
by Staff
Who hasn't fantasized about throwing someone's cell phone out the window after unwillingly hearing way too much of his or her conversation? Cell-phone jammers silence these yappers and all other calls, obnoxious or otherwise, in a given area. But are they legal?

Why were cell-phone jamming devices originally developed?

  • to interrupt communications by criminals and terrorists
  • to force hotel guests into using in-room phones at high rates
  • to stop corporate espionage by blocking voice and photo transmissions from camera phones

How does a jamming device overpower a cell phone?

  • by transmitting a signal on the same frequency
  • by transmitting a signal on a different frequency
  • by sending a low-level electromagnetic pulse

High-powered cell-phone jammers can shut down service how far away?

  • 500 feet (152 meters)
  • 1 mile (1.6 kilometers)
  • 5 miles (8.0 kilometers)

In 2004, France legalized cell-phone jammers in which of the following places?

  • restaurants
  • schools
  • movie theaters

Cell-phone jamming reportedly foiled an assassination attempt on which world leader?

  • U.S. President George W. Bush
  • Pakistani President Pervez Musharraf
  • U.K. Prime Minister Tony Blair

Which U.S. federal agency is charged with enforcing jamming laws?

  • the FCC
  • the FTS
  • the SEC

The ___ is the part of the jammer that generates the radio signal that interferes with the cell-phone signal.

  • tuning circuit
  • voltage-controlled oscillator
  • noise generator

How do you know your cell phone has been jammed?

  • You don't.
  • Your phone quickly overheats.
  • A denial-of-service message flashes on the phone's display.

If you think your cell phone is jammed, what should you do?

  • Buy a new phone. Your old one is fried.
  • Walk away from the immediate area.
  • Make a citizen's arrest and detain the suspect until the police arrive.

What are some alternatives to cell-phone jamming?

  • hand a note to the obnoxious person blabbing away, saying you couldn't care less about his or her conversation
  • build and live inside a thick concrete bunker that blocks radio signals
  • hand out many notes and build many bunkers