On the forum of communicators on the search for listening devices

Started
And still very good sound is taken from the windows... from a distance of hundreds of meters.
Generally so. The windows clogged. Put a brick. Or just put the concrete. The office is careful (all!) cover first with copper foil, then permalay, then make a lead shell with a thickness of at least three millimeters. On top of the entire building to pour soil with a thickness of at least 5 meters.
The entrance must be through the barracks. The staff at the entrance to the room should be thoroughly inspected. Dress up naked, give out the office set of clothes (up to the underwear), so that no instruments and media can carry information inside the body (with records that have already taken place) records - on the entrance to illuminate the X-ray. In order to prevent the disclosure of information at the DNA level, feed the entire staff at your own catering facility in order to cause mutations and spoil the information on the DNA.