Such as the monitoring of goods in transit

 Iridium satellite communication system can be used when a mobile telephone system failure. Such as the monitoring of goods in transit or wireless control technology facilities located away from the use of useful applications based on the Iridium system, to ensure secure communications in these areas is essential, reliable, real-time correction, so that the entire continent of high accuracy applications program, without the need to deploy a local base station. And ongoing tectonic movements, such as the frequent occurrence of slow slip events monitoring the east side of the North Island, to discuss the development of navigation technologies. The three-day international conference to attract users and experts from around the world in various fields of navigation, and give participants the opportunity to learn about the latest research results of navigation and network with influential experts. The meeting will run two parallel three-day conference will cover all major application areas, including marine, aviation and ground vehicle navigation. By a signal connected to a comparator, and then the period between the pulses for counting, using two threshold values ??of the filter to prevent spurious noise and transients caused wearer walking affect steady-state technology. And the technology is more advanced. It is in addition to emitting "noise", but also to the base station transmitter garbled information, in order to cut off the communication protocol of the mobile phone and the base station, so as to achieve the shielding purposes.
Theft by criminals away, open the "mobile phone killer" in the car, the vehicle can not be traced. Because the market use GPS alarm actually or through the mobile communication signal monitoring center. By common sense, the vehicle if it is stolen, the owner can request GPS monitoring center to track the vehicle. GPS Monitoring Center shows only lost signal, car navigation systems can not track the vehicle.
In Japan, some criminals will get someone else's phone number, dial their phone, lied to their families the accident need to exchange medical expenses fraud. To put an end to the fraud occurred. In the United States, cell phone signal jammers general for prisons. Once time, this device is also some coffee shops and barber shop operators, restaurant owners, theater operators to buy used, but later was legislation to ban private shielding signal behavior. The freedom and privacy of correspondence of citizens are protected by law. In addition due to the needs of national security or of investigation into criminal offenses in accordance with the statutory procedures of communication by the public security organs or procuratorial organs check, any organization or individual is not in any grounds, infringe upon the freedom and privacy of correspondence of citizens.