Signal jammers were originally devices used to block communication signals in special situations, and were mainly used in meetings, exams and other occasions where information leakage needs to be avoided. cell phone jammerHowever, a recent bank robbery in West Bengal showed that such devices have gradually been used as criminal tools. This case exposed the challenges faced by law enforcement agencies in dealing with emerging technology crimes.signal jammer

　　1. New means of criminals: portable signal jammers

　　The criminal gang in this robbery demonstrated how to use portable signal jammers to achieve their goals. Normally, banks rely on mobile signals and the Internet to keep communications open and ensure that they can call the police in emergencies.GPS jammer However, the jammers used by this gang of robbers completely blocked the mobile phone signals inside the bank, making it impossible for bank employees and customers to call for help from the outside world, and even text messages and network applications were ineffective.Wifi jammer

　　2. Tension at the scene of the robbery

　　The gang raided the bank between 2 and 3 pm, threatening employees and security guards with guns to obtain large amounts of cash and valuables. drone jammerHowever, despite the robbers' good preparation, a bank employee managed to trigger the alarm system, which attracted a quick response from the police. After receiving the alarm, the police immediately cordoned off the scene, but when they tried to contact the headquarters, they found that all means of communication failed.

　　3. Law enforcement response strategy

　　Faced with the communication dilemma brought by the signal jammer, the police had to rely on traditional command methods. During the blockade operation, the police avoided direct fire with the robbers and chose to use a containment strategy to force them into a dead end. In the end, three robbers were successfully captured, while another successfully escaped in the chaos.

　　In order to prevent the robbers from escaping the scene, the police quickly set up multiple roadblocks and checkpoints around Chandannagar to ensure that the remaining suspects could not escape the blockade area. The Hooghly District Police said that they will continue to intensify the search and ensure that all those involved in the case are brought to justice.

　　4. Potential threats of portable signal jammers

　　This case has made all sectors of society aware of the potential harm of portable signal jammers. As such devices circulate on the black market, more and more criminal gangs have begun to use them to hinder law enforcement and communications. In this regard, the police called on the legislature to strengthen the control of signal jammers and raise the public's vigilance against their illegal use.