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When low-frequency electromagnetic interference is used, materials with high magnetic permeability are used to limit the magnetic flux inside the shield to prevent diffusion of the protected space. In some cases, if the conditions required for high frequency and low electromagnetic fields have good protection, they usually consist of multiple metal shielding layers and use different materials.Many people do not understand the principle of electromagnetic shielding. As long as the metal box and the box are grounded, they can serve as electromagnetic shielding. Under this concept is the result of failure. Because the electromagnetic shielding has nothing to do with whether the shield is grounded.

There are only two factors that affect the practical effectiveness of protective shielding: one shielding surface must be continuously conductive, while the other conductor cannot penetrate the shielding directly. There are many points on the discontinuous conductive shield, the most important of which is the non-conductive space formed by connecting different parts of the wifi jammer. Non-conductive differences can cause electromagnetic leakage because fluid can leak from the same location on the container. One way to address this leak is to fill the space with a conductive elastic material to eliminate non-conductive points.

Another controversy raised by the implementation of Geolocation scramblers is the health effects of electromagnetic waves. Numerous studies have shown that these waves are hazardous to health when using WiFi interference devices. Therefore, they can be dangerous during message transmission. However, effective jammers continuously emit electromagnetic waves, which makes it possible to propagate electromagnetic waves carrying messages at any time.For the same reason, this filled rubber acts as a fluid container in the space. This conductive filling material is an elastic electromagnetic seal.