Cheating has always existed, especially in our era with technological progress, cheating methods are emerging in an endless stream and becoming more and more sophisticated. Of course, we see more and more anti-cheating work. In addition to the basic inspection by examiners, there are also common Metal detectors, test room signal blocker, etc. Among them, signal shielding can be said to be the most brilliant method, especially in our era with the continuous improvement of electronic equipment, and it can even evade detection. The current cheating method is basically that people in the examination room bring electronic equipment into the test room to talk about the topic and output it to the outside world, and then The purpose of cheating is achieved by answering the questions by people outside the examination room. These all need to be propagated through network signals, and signal shielding is particularly important at this time.

Handheld Cell Phone Signal Blocker Jamming CDMA GSM 3G WIFI2.4G GPSL1

Suppose we treat these cheating electronic devices as a two-way radio, and the reception in the test room is broadcast outside the test room, then the signal jammer in the test room is an influencer to make your radio sound inaudible. Our mobile phones and these electronic devices are required. Communicate with other devices through cell towers. Wireless communication requires electromagnetic waves. According to the characteristics of electromagnetic waves, electronic devices such as mobile phones need to be received within a certain frequency range. Therefore, the test room signal shield is to affect the frequency of your electronic equipment so that the frequencies of the two sides are different, so as to achieve shielding. Effect.

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