Why the GPS signal blockers bring so many bad effects?

GPS signal jammer can cause many problems. According to the report that a GPS based landing system at Newark Liberty International Airport malfunctioned twice a day by the portable GPS signal jamming device of a driver on the nearby highway who did this to avoid paying tolls on outbound and return journeys. It happens that there is a similar case, A New Jersey truck driver GPS jammer use a GPS signal jammer as a way to prevent his boss from tracking his locations through a GPS tracking device installed in the truck during a visit to Newark, New Jersey's Liberty International Airport. Due to his GPS signal jammer, it seriously interfered with the precision navigation system of the Newark airport.

A research tells that GPS signal blocker poses significant threats to mobile phone systems, parts of the electrical grid, and the safety of drivers. Many GPS signal jamming devices may disrupt the operation of cell phones. Once there is any emergency and the drivers cannot call for help at the first time, the consequences would be unimaginable. There has also been an emerging threat from more powerful GPS "spoofing" systems. GPS spoofing attacks can provide both inaccurate location and time information, potentially creating much larger problems than a dropped call. There have been incidents where trucks carrying high value goods have been hijacked.

Why the GPS signal blockers bring so many bad effects? You should be told that GPS jamming devices do not only scupper the operation of satellite navigation systems within a certain area. It can also disrupt the reception of the atomic-clock-based timing signals from GPS satellites. These signals are used by financial institutions to time stamp transactions and by utility companies to synchronize power grid operations. Once these signals are blocked by the jamming devices, it will cause enormously loss.

It is not easy to sweep the flooded private GPS signal jammers. The government's approach has been to warn the public, identify any websites advertising the sale of GPS jamming devices, prohibit GPS blocker importation, and fine anyone selling or using them. In most part of the world, there are restricted laws to deal with those who use, buy, or sell jammers. For example, in the United States, anyone who breaks the law by using, buying, or selling GPS blockers will be subjected to heavy fines, even be put into prisons. More, in European countries, people who can own a jammer as long as they don’t use it. Since there are restrict law against GPS signal blocker and the government has taken measures to deal with the wide use of private GPS signal jammers, this issue remains seriously. Continuing efforts against the GPS jammer are required.