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Best
1
Microphones with Directional Audio
Specialized microphones with highly directional audio pickup capabilities are used for covert audio surveillance. These microphones can isolate sounds from a specific area while minimizing background...
6.5
Fair
2
Hidden Cameras
Hidden cameras are miniature cameras disguised as everyday objects, used for covert video recording. They are often employed in surveillance and intelligence gathering, but their use raises significan...
5.8
Average
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