you can try some network jammer online

Many users are not like the ones mentioned above who want to be quiet in the car. From business institutions, schools, hospitals to Banks, even police agencies, there is demand for mobile signal blocker, and demand is growing because there are more and more things to do. A company in the United States is said to have invented a device that can interfere with camera functions.Many detainees continue to organize their illegal drug trades from inside prison walls. A cell phone is an essential means for the detainee to keep the drug organization running and closely controlled.

By contacting visitors before they arrive, prisoners can arrange for a transfer of drugs and drug paraphernalia, allowing them to continue the same illegal habit that placed them in custody. Frequently, the family endures harassment from its incarcerated relative, demanding bail when the family recognizes the relative is better served remaining in custody.There are devices Network Jammer Online which will interfere with the phone signal, in essence pretending to be a base station while not being one.The problem with that is that it disables emergency calls.

ardens have tried and failed to stop cell phones signal jammer from making their way into prisons. Rather than fight that losing battle, they might be able to prevent cell phones from being used once they make their way inside.In theory, you could implement something which switched phones to “manner mode” when they were in a location where calling was not allowed. But nobody has suggested this either as a product or a standard, evne though it would not be particularly difficult. Perhaps beacuse the ones who would have to pay for it would be the cinema owners, restaurateurs.