electronic-surveillance

electronic surveillance

noun
surveillance or the gathering of information by surreptitious use of electronic devices, as in crime detection or espionage.

Origin:
1970–75

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Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
electronic surveillance
 
n
1.  the use of such electronic devices as television monitors, video cameras, etc, to prevent burglary, shop lifting, break-ins, etc
2.  monitoring events, conversations, etc, at a distance by electronic means, esp by such covert means as wiretapping or bugging

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