Signal jammers, as a technical tool, have been widely used by criminals to commit car thefts in recent years, especially in the frequent "asphalt pirate" crimes in Argentina and other places.signal jammer This technology not only changes the traditional way of stealing cars, but also makes it easier and faster for criminals to succeed. However, behind this new crime model, there are a series of complex technical means and social problems.cell phone jammer

　　1. Working principle of signal jammers

　　The core function of signal jammers is to block wireless communication between cars and car owners by transmitting interference signals.GPS jammer In most modern cars, car owners use remote control keys to lock the car, and the signal sent by the remote control communicates with the receiving system in the car to activate the alarm system and lock the doors. Signal jammers transmit interference signals with the same frequency as the car alarm system, so that the remote control signal cannot be transmitted to the car normally, causing the owner to think that the car door has been locked, but in fact the car door is not really locked.

　　Typically, the effective range of signal jammers can reach 40 to 50 meters, which means that criminals do not need to get close to the target vehicle, and can achieve interference by remote operation in the parking lot. This method not only makes it difficult for car owners to detect, but also brings great difficulties to the police in solving the case.

　　2. Evolution of crime patterns and case analysis

　　Signal jammers were first used in car theft crimes in Cordoba Province, Argentina, and then quickly spread to large cities such as Buenos Aires. Criminals usually choose large shopping malls, supermarkets and other public places with large traffic as the crime scene. Car owners often neglect to check whether the car doors are really locked when shopping, which gives criminals an opportunity to take advantage of.

　　A typical case occurred in the Villa Urquiza area of ​​Buenos Aires. A businessman Sebastian and his wife went shopping in a shopping mall in the suburbs. When they locked the car and entered the mall, the car's alarm system and locking function were actually blocked by the jammer, and the car door was not really locked. The criminals took advantage of this loophole to easily enter the vehicle, steal the items in the car and obtain Sebastian's home address, and then carried out a burglary.

　　This case reveals the key role of signal jammers in the implementation of efficient and organized car theft crimes. Criminals can easily obtain property inside the car without damaging the exterior of the car, and even further commit burglary.

　　3. Technology Source and Market Demand

　　The widespread use of signal jammers is inseparable from their low cost. These devices are usually imported from China through black market channels, with prices ranging from $100 to $400, and some advanced devices cost up to thousands of dollars. However, in recent years, due to the development of technology and the increase in market demand, the price of jammers used by criminals has dropped to a more civilian level, and some hand-assembled devices cost as low as around $1,000.

　　According to reports from the Argentine security department, car theft gangs often use these portable jammers to commit crimes, and the equipment is small and easy to hide, which further increases the difficulty of police arrest. Although it is not illegal to own a jammer, once it is used for crime, criminals will be punished by law.

　　4. Impact on society and safety hazards

　　The increasing rampant crime of car theft with signal jammers has aroused widespread concern from all walks of life. Especially in large cities and public parking lots, car owners often neglect to check the safety of their vehicles when they go out shopping or doing business, giving criminals an opportunity to take advantage. Data shows that car thefts in Buenos Aires, Argentina, were on the rise in 2018, with an average of 3.5 cases per day.

　　In addition, the use of signal jammers has also extended to other criminal areas. For example, high-value goods on freight trucks are often targeted by criminals. In 2017, a large-scale cargo theft occurred in Argentina, in which criminals used signal jammers to hijack a truck carrying nearly a thousand Playstation 4 game consoles, involving hundreds of thousands of dollars.

　　V. Countermeasures and prevention suggestions

　　In the face of the safety hazards brought by signal jammers, car owners can take a series of preventive measures to reduce the risk of theft. The first and simplest measure is to personally check whether the car door is really closed after locking the car every time, instead of just relying on the "beep" sound of the remote control to confirm whether the car door is locked. This simple action can effectively prevent the door from being unlocked due to signal jammers.

　　Secondly, when parking, you should choose an area with good visibility and dense traffic, and try to avoid parking in remote places. In addition, when parking, try to minimize the storage of valuables in the car, especially documents, keys and other items, which should be carried with you to avoid giving criminals an opportunity to take advantage of them.

　　In addition, the government and parking lot management can also take a series of measures, such as installing high-definition cameras in the parking lot, strengthening the monitoring of vehicle entry and exit, and setting up safety reminder signs when necessary to remind car owners to pay attention to vehicle safety.

　　VI. Legal response and future prospects

　　Although the use of signal jammers has been widely used in car theft crimes, the current laws and regulations on this device are relatively lagging. Although Argentina's law enforcement agencies have increased their crackdown on signal jammer crimes, since the jammers themselves are not illegal, criminals are often difficult to be caught in the first place.

　　In the future, with the continuous development of technology, the manufacturing cost of signal jammers will be further reduced, and more criminals may use this tool to commit theft. The government and relevant departments should improve laws and regulations as soon as possible, strengthen the supervision of signal jammers, and prevent them from being abused in criminal activities. At the same time, car owners and the public should also raise their awareness of prevention and reduce safety hazards caused by technical loopholes.