There is a wall-mounted device

Radial Wall Scope

US anti-piracy experts have devised a device that can identify people behind a 25cm wall.

It is expected that this Rada Scope radar can become an effective helper for police and military personnel in conducting anti-terrorism and combat operations in major cities and residential areas.

The inventors assert that the Rada Scope is only seconds away from determining whether or not a home is inhabited. Just put the device on the wall and it can record small movements as well as human breathing.

The device weighs almost 680 grams and the size of the phone is much more efficient than an existing detector. Waterproof case, AA battery operated.

The United States Department of Defense plans to provide these cross-screen devices to US troops stationed in Iraq. At the same time, the department also plans to improve it to develop Visi Building products that can illuminate the building with floor plans and staircases, as well as find objects in it.