electronic surveillance

Japanese: electronic surveillance(英語表記)electronicsurveillance
electronic surveillance

…Wiretapping is the process of tapping telephone lines using mechanical methods. In addition to the case of secretly listening in on conversations heard outside the room, or of using mechanical devices to intercept and record conversations (electronic surveillance or bugging), in a broad sense, wiretapping can also include cases where one party records a conversation without the other party's permission, or where a third party listens to and records a conversation with the consent of one party. Even if the speaker (or the person speaking) does not give permission, the speaker himself may be considered to have abandoned the confidentiality of the content, and conversely, not all cases are legal just because one of the parties knows about it.

*Some of the terminology that refers to "electronic surveillance" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…このうち電話線から機械的方法で通話を傍聴することを〈ワイヤタッピングwiretapping〉と呼ぶ。室外に聞こえてくる会話をひそかに立ち聞きし,あるいは,機械装置により会話を傍受して録音する(エレクトロニック・サーベイランスelectronic surveillanceまたはバッギングbugging)場合のほか,会話の一方当事者が相手方に無断で会話を録音し,または一方当事者の同意を得て第三者が会話を聴取・録音する場合なども,広い意味では盗聴に含めることができる。会話者(ないし独白する人)に無断であっても,発言者自身がその内容の秘密性を放棄しているとみられる場合もあるし,逆に会話者の一方が了解しているからといって,すべてが適法とはいえない。…

※「electronic surveillance」について言及している用語解説の一部を掲載しています。

出典|株式会社平凡社世界大百科事典 第2版について | 情報

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