6 things you may not know about GPS system jammers:
1) GPS jammers are illegal in the United States and restricted in Europe. However, laws in some other countries are less clear.
2) Jamming devices can easily be ordered online. GPS jammers are marketed and sold online as gadgets to protect personal privacy and prevent someone from tracking your movements. On the internet there are GPS jammers being sold for as low as $33.00 at the Jammer World.
3) Some say that GPS jammers are dangerous to society. “The worry is that factories in China are starting to churn these things out,” says Peter Large, vice president at Sunnyvale, Calif.-based Trimble, which develops advanced positioning systems. “If they did start to proliferate, it could have devastating consequences.”
4) Some people believe the devices can be useful and people should have the right to buy them. For example, Michael Kharkovoy, CEO of Jammer-Store, told Fox News that GPS jammers can be stowed easily in a car or a bag and can help avoid spy detection — say, from a spouse who suspects infidelity and plants a GPS tracking device like the Zoombak in a car.
5) Since car and truck fleet operators often equip vehicles with on-board GPS tracking receivers, drivers may use jammers to prevent their bosses from monitoring them.
6) Criminals, car thieves and pranksters can use GPS jammers to get away with bad behavior. For example, if a car thief steals a car with a GPS jammer, then law enforcement will not be able to use the GPS tracking device to track down the vehicle. Jamming equipment can also be used to block toll road charges.
For more information about GPS jammers, go to GPS Jammers – Dangerous, Illegal and Easy to Buy.
Source: http://www.foxnews.com/scitech/2010/03/17/gps-jammers-easily-accessible-potentially-dangerous-risk/