acoustical surveillance

acoustical surveillance

Employment of electronic devices, including sound-recording, -receiving, or -transmitting equipment, for the collection of information.
References in periodicals archive ?
WHILE GOVERNMENTS HAVE recognized that their sensitive information may be vulnerable to acoustical surveillance and have taken steps to counter it, industry has not.
He or she is skilled in the art of acoustical surveillance, has access to sophisticated devices, and knows how to use them.
The security manager is asked to secure a room in the executive area so those sensitive conversations can be held without threat of acoustical surveillance.
Of course, operational considerations, such as sweeps, can also serve to limit acoustical surveillance, but these techniques are beyond the scope of this article.