cell phone jammer still can be used in such serious locations

Any touch object can change the contacts on the infrared touch screen operation. cell phone jammer still can be used in such serious locations as the party and government institutions, theaters and so on which need tranquility.
Capacitive screen coated with a transparent conductive layer of ITO, the voltage is connected to the four corners of the tiny DC bulk Ministry of the screen surface to form a homogeneous electric field, hand touch screen, the human body as a coupling capacitor, the current pooled from the screen the four corners of the formation of coupling capacitance another a pole, the controller calculates the current spread to the relative distance of the touch position coordinates of the touch. Infrared touch screen is to use the X, Y direction over the infrared matrix to detect and locate the user's touch. Infrared touch screen installed in front of the display frame of a circuit board circuit board on the screen four sides of row cloth infrared emission control and infrared receiver, infrared matrix correspond to the formation of horizontal and vertical cross.
Global Positioning System consists of three parts: ground control segment, by the Master Control Station , the ground antenna (under the control of the master station, into the satellite to find the message), stations and communication aids system (data transmission); space segment, composed of 24 satellites distributed in six channel plane; users device part of the GPS receiver and satellite antenna. The main advantage of the Global Positioning System. Weather; (2) global coverage; (3) three-dimensional constant speed timing precision; (4) fast time-saving high efficiency: (5) are widely used multi-functional. The jamming range of cell phone jammer is dependent on the local signal strength.
The main drawback of the Global Positioning System, but the vision is not open, such as under a tree or room and underground car parks, can not find space for a sufficient number of positioning satellites, can not locate. Huge industrial chain support GPS navigation mobile phone business beyond the traditional value-added services to the huge lineup of industrial chain, from the many facets of the mobile operators, equipment suppliers, terminal manufacturers, GIS developers, application providers, middleware providers composed of the integrated use of many technologies and applications, including mobile communications, satellite navigation, Internet, geographic information systems, integrated information service is a product of a number of industries, a number of technology convergence and integration.