The use of mobile communication devices smuggled into prisons is one of the main drivers for implementing signal inhibiting solutions to block, restrict or inhibit mobile communications signals. One of these solutions is the use of mobile signal inhibitors(jammers). Signal inhibitors or blockers, commonly known as jammers, are radio devices that intentionally transmit signals to affect, block, interfere with, or saturate the communications services of mobile users. This includes calls, text messages, GPS positioning signals, data services, and Wi-Fi networks.

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SMS robot is a kind of tool that both sends and reacts to messages. The instantaneous and readily available nature of text messages makes SMS robots a scalable tool for providing real-time information to healthcare organizations, schools and childcare centers, governments, and enterprises of all sizes.
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