| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a mobile phone possession detector capable of inexpensively in a simple configuration inhibiting a person from entering a hall possessing a mobile phone in a waiting state for an incoming call. <P>SOLUTION: The mobile phone possession detector comprises: a detector 2 which detects a control signal transmitted from a mobile phone to a base station when a person passes through a gate 1 which restricts a person from entering a hall; an output device such as a display device 3 which outputs when there is a detection by the detector 2; and a shield 6 capable of shielding a control signal transmitted from a base station to a mobile phone. <P>COPYRIGHT: (C)2013,JPO&INPIT</p> |
