listening devices
Hidden audio recorders
Listening devices are equipment used to hear sounds, especially covertly.
The term most often refers to hidden microphones or bugs planted to eavesdrop on conversations: The room was swept for listening devices.
It can also mean assistive technology for the hearing-impaired, though that usage is less common.
- wiretapHidden listening device
- wire tapCovert audio surveillance
- hidden microphoneConcealed audio surveillance device
- earbudsTiny insertable audio devices
- hearing aidEar-worn sound amplifier
ear trumpet · bug · cochlear implant · headphones · stethoscope · hydrophone · surveillance · audio surveillance · telecoil · sound amplification · eavesdropping · listening in · dictaphone · spying · shotgun microphone · tape recorder · baby monitor · parabolic
- espionagespy, spies, double agent, double agents, spying
- surveillancesurveillance, CCTV, security camera, surveillance camera, surveillance cameras
- wiretappingwiretap, wiretapping, wiretaps, phone tapping, phone taps
listening devicespublic address systems
Equipment amplifying speech broadly
loudspeakers · broadcasting equipment · megaphones · transmitters · speakers
listening devicesCCTV
Surveillance camera network
motion detectors · cameras · video cameras · security cameras · thermal imaging
listening devicessignal jammers
Devices disrupting wireless communications
Faraday cages · encrypted communications · soundproofing · privacy screens