Vol.34 No.3 (2016) 1 論 IMSIキャッチャー (偽装基地局) による米国政府の 情報収集の法的位置づけ及びその国内法への示唆 The legal relationship between the use of cell-site simulators or International Mobile Subscriber Identity Catchers (StingRay) by law enforcement agencies and the Fourth Amendment of the Constitution of the United States as well as some consideration of its implications for Japanese law 海野 敦史* 文 * Atsushi UMINO 要 旨 米国の法執行機関に