Microphones can be hidden completely out of sight. A long enough lens barrel can...

		jarfil on Jan 17, 2019 \| parent \| context \| favorite \| on: How to Find Hidden Cameras and Spy Gear Microphones can be hidden completely out of sight. A long enough lens barrel can put the heat generating electronics far enough from any visible surfaces that the heat signature may become unnoticeable. Also the heat camera is the most expensive method.