In order to prevent the car from going back, the car rental company will install GPS positioning equipment on the car. But the road is one foot high, and the magic is one foot high. The signal jammer set by the renter will interfere with the normal use of the GPS device and cause losses to the car rental company. Signal jammers have become the worst enemy of car rental companies. Cell Phone Network Blocker Circuit Where did it come from? Are there any relevant usage guidelines? Qiu Yunfei, an engineer at the Office of the Qingdao Radio Management Committee, told reporters that mobile phone jammers are also called signal jammers. All radio jamming devices, including cell phone jammers, must be approved by the safety department. Subsequently, the reporter visited the Qingdao electronic market and found that most of the merchants sold cell phone jammer through semi-open methods such as telephone calls. According to the merchant, this mobile phone blocker has 6 antennas, and can also shield mobile phones, 2G, 3G, and 4G. and Global Positioning System.
Ms. Wang, a citizen of Nanjing, encountered a strange thing while taking a taxi. She set off from near Nanjing Railway Station and took a taxi to Lukou International Airport. The driver charged a fare of 250 yuan. Not only is the fare expensive, but the mobile phone has no signal when getting on the bus, and the invoice information is incomplete, which makes Ms. Wang particularly puzzled. Fortunately, she kept staring at her, took a picture of the taxi's license plate, and reported this series of encounters to the Nanjing Municipal Transportation Department. After investigation by law enforcement officers, there were no Su A91621 taxis in Nanjing. Therefore, they found a number of taxis similar to the Su A91621 in the Nanjing Taxi Information Database and compared them one by one. "We collected operational data, checked the vehicles that often depart from the taxi stand at Nanjing Railway Station, and then compared and analyzed three suspected vehicles." The law enforcement officer told reporters and sent the driver's photo to Wang. Ladies compare. At a glance, she realized that the taxi driver named Su A91xxx was the driver of the day. After several days of control, law enforcement officers stopped a Su A91xxx taxi that was recruiting customers near Nanjing Railway Station for inspection. This taxi from Nanjing Agricultural Reclamation Company is fully equipped and looks like an ordinary taxi. However, law enforcement officers scrutinized and found multiple " Cell Phone Network Blocker Circuit "s one after the other.
