I recently received a complaint at a library. Ignore the feelings of others and call out loud in public places. It is useless to persuade. It costs tens of thousands of yen to ensure the rest of the building. A cell phone jammer is installed in a centralized reading room. You can block GSM / CDMA / DCS / PHS / PCS / 3G mobile phone signals within the blocking range. When the phone is out of the blocked range, the phone can be used normally. Citizens have different reactions to installing mobile phone jammers in libraries. Many people are in trouble when reading a book, hearing the ringing of the phone.

By installing jammers in some areas of the library, some people think that emergency contact may be inconvenient. I think some people will eventually have a quiet learning environment. What do you think of using jamming equipment in the library? Do you support it? Some people are reading a book in the library. After an hour, it will come out of this case. He was scolded by the manager. He said he didn't get through his cell phone. He finds a sign that the signal on his cell phone has been blocked. " He thinks libraries should not limit readers' freedom of communication. It is really necessary to actively develop the spiritual civilization at the same time as the material civilization of today is highly developed.