harmonica bug

英語（米国） (en-US) 英語（イギリス） (en-GB)

名詞

An electronic eavesdropping device (bug) that attaches to a landline telephone and is activated or deactivated by a specific tone. When activated, it prevents the telephone from ringing but activates its microphone to transmit to another telephone at a remote location.

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Detectives discovered a harmonica bug on the victim's landline that could be activated by a specific tone to silence the ringer while transmitting conversations to a remote telephone.

詳細

意味（1）

An electronic eavesdropping device (bug) that attaches to a landline telephone and is activated or deactivated by a specific tone. When activated, it prevents the telephone from ringing but activates its microphone to transmit to another telephone at a remote location.

The most interesting device for tapping a telephone, though, is still the old reliable “harmonica bug,” which was invented in the early sixties by an electronics wizard from Lower Manhattan, Emanuel Mittleman.

詳細

harmonica bugs （ plural ）