Can a company, organization or school block the phone signal? Is it legal? During working hours, it was discovered that employees did not have cell phone signals in the workshop. Facts have proved that this is a centralized installation of mobile handheld jammer for production and personnel. Company managers recently admitted that they have begun to try to use signal screening methods to regulate the production control of employees. By adopting this method, the main purpose is to promote safe production and ensure employee efficiency. The company can set up landlines so as not to affect the staff of emergency contacts, and can operate through these landlines in an emergency.
Of course, cell phone jammers must also be used in prisons. Since 2005, authorities have confiscated more than 6,000 mobile phones in 55 prisons in North Carolina, including 443 this year. This number has been increasing steadily until 2012 when the authorities implemented airport-like entry and exit procedures in high-security prisons, such as metal detectors, X-ray scanners and well-trained dogs. Authorities said that after Jensen was kidnapped, a state law was passed that would criminalize the provision of cell phones to prisoners and also act as a deterrent. Some facilities use managed access, which is an expensive system that can block unauthorized cell signals in some prisons, but Solomon said.