1) Audio surveillance method 2) Surveillance technique 1) Plantingbugs 
(from the article `China`) ...passed a controversial Interception of Communications and Surveillance Ordinance, which allowed authorities to obtain a judge`s permission to ... ...the year. In early February news broke that some 100 mobile phones—including those of Karamanlis and members of his government, as well as of top ... ....
Eavesdropping on private conversations by connecting listening equipment to a telephone line. To be legal, wiretapping must be authorized by a search warrant or court order.