Does the examination room mobile phone signal jammer have blacklist and whitelist management functions?
Sometimes, we will receive inquiries from school leaders or teachers: we hope to purchase a batch of mobile phone signal jammers for the examination room, so as to prevent students from cheating in the exam by using wireless communication work during the exam. However, additional requirements are put forward: it is required to be able to identify and distinguish the mobile phone numbers in the examination room. The ideal effect is to block the signal only for the mobile phone numbers of the students, while the mobile phone numbers of the teachers can be used normally. It is equivalent to defining the mobile phone number of the students as a blacklist, and defining the mobile phone number of the teacher as a whitelist, then the question arises: Does the mobile phone signal jammer in the examination room have the management function of blacklist and whitelist?
It is a pity that the conventional mobile phone signal jammer in the examination room is 100% sure that it does not have the management function of blacklist and whitelist. Analysis from the technical principle: currently in the scope of application in the examination room, the mainstream mobile phone signal jammer is just an electronic device that can emit white noise interference signals. It uses power suppression to prevent the mobile phone from forming a normal and effective communication with the base station. Communication connection, so as to achieve the effect that the mobile phone signal is shielded. However, if it is necessary to identify the numbers of mobile phone users within a certain range, and further classify and manage these mobile phone numbers, that is, to distinguish them by blacklist and whitelist, then such a product must first have signal reception and The ability to analyze and process, and at the same time, it also needs to be able to support the analysis and identification of multiple communication operators and multiple mobile phone standards. As mentioned earlier, our common mobile phone signal jammers in the examination room only emit interference signals and have no receiving components at all, so it is completely impossible to implement blacklist and whitelist management functions.
Then the customer will continue to ask: Since our mobile phone signal jammer in the examination room cannot set and manage the blacklist, is there any electronic product that can realize this function in reality?
In reality, there is indeed a system device with blacklist and whitelist management functions, but it will not be called a mobile phone signal jammer. The correct name should be called: mobile phone signal management and control system. However, this system is a bit similar to a pseudo-base station. It is usually only authorized to purchase and use by the public security special police or some special management departments, and the purchase price of a system is not low. If the school purchases such products for the construction of standardized examination rooms, Is it feasible? It's still up for debate.
Sample Image Gallery
