As the number of Internet of Things (IoT) devices grows rapidly, more and more everyday devices are connected via radio frequencies (RF). cell phone jammer These devices often use unsafe or proprietary protocols, making them easy targets for criminals. In recent years, there has been an increase in cases of criminals using radio jammers, posing safety risks to vehicles, home automation systems, and even industrial facilities.signal jammer The threat of radio jammers is not limited to jamming specific signals; they can also completely cut off communications, preventing alarms, phones, and other devices from functioning properly, with serious consequences for public safety and personal privacy.GPS jammer

　　Car Lock Jammers: Convenient Tools, Criminal Weapons

　　In recent years, there has been an increase in cases of car lock jammers, especially in large cities. These devices can prevent a vehicle's remote locking and unlocking functions, making it impossible for car owners to use their cars normally. Wifi jammer In one case in Manchester, UK, a thief used a car lock jammer to prevent dozens of cars in a parking lot from locking properly and even triggered the alarms of multiple cars. These jammers typically operate in two frequency ranges: 315MHz and 433MHz, with the former mainly used in the North American market and the latter widely used in the European and Asian markets.

　　Although most countries prohibit the sale and use of such devices, criminals can still easily obtain these illegal tools through the Internet, and the price is usually between $50 and $200. To prevent the vehicle from being interfered with, car owners need to be vigilant and ensure that the car sends a visible or audible signal reminder when it is locked. In addition, some new vehicles no longer offer the option of manual locking, which also puts car owners at greater risk.

　　Home Automation and Burglary: From IoT to Theft Network

　　The popularity of IoT devices has brought unprecedented convenience, but it has also increased the opportunities for criminals to use radio jammers to commit burglary. Many home automation devices and electronic door locks work in the 868MHz frequency band through the Zigbee protocol or other proprietary protocols. Although these communications are usually encrypted, jammers can easily block device signals and render security protection ineffective. For example, in some cases, thieves can use radio jammers to block the signals of home cameras and quietly invade houses.

　　In addition, more and more families have cut their wired telephone lines and rely on the Internet or cellular networks for communication. But if these signals are interfered with, the alarm system and surveillance cameras in the home may not work properly or even send alarms to the security monitoring center. Criminals can destroy the entire security system in a short time by simply cutting off the Internet connection or using a cell phone jammer.