popular devices can be purchased legally block tracking systems stolen vehicles or drivers and taxi drivers who work long hours

Thousands of people in the UK use "GPS blockers" that plug into the cigarette lighter and can stop monitoring systems used to detect stolen vehicles, use the monitor or stop the drivers who work too many hours, according to new data by the experts.

This could lead to dangerous situations tired truckers left the road, despite the presence of surveillance equipment, and could also be a threat if equipped vehicles inhibitors had to go to the area near the airport where the aircraft is based on GPS (Global Positioning System) navigation.

However, despite the risks posed by the devices - which are sold on the Internet - it is illegal to import, sell, purchase or possess. It is a single offense under the Act wireless telegraphy "knowingly use" a device to block the GPS signals -. Though the communications regulator Ofcom attempts to fill some of the gaps

The increasing use of devices could also derail plans to introduce "pay as you drive" insurance or pay if the vehicle owner was able to block communication with monitoring systems.

"When people use these products, you create a bubble around your vehicle about 500 meters jam any GPS receiver or a transmitter," said Professor Charles Curry Chronos Technology The Guardian . "Stop any tracking system the owner could put in the car. Normally locked GSM [mobile] also notes that it can also be used to return a location.

"can be truck drivers making deliveries out of hours or taxi drivers who work for a company and you want to keep all the payments for themselves instead of dividing the owner of the cabin, "said Curry.

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