Spy microphones, the unsung heroes of ... This makes it perfect for long live streams and outdoor recordings, ... Range: Distance at which the microphone can effectively capture sound.

Spy tools, whether designed by intelligence agencies, cyber crooks or internet creeps, ... Muting the mic won't work, since it's possible for an intruder to unmute it.

These "zebras" each had a different period, measured by the distance in pixels between black stripes. As the program ran, the team recorded the sound emitted by a Soyo DYLM2086 monitor.