A company has developed a new sensing device that, according to the company' s claims, detects weak, ultralow-frequency electromagnetic signals associated with a beating heart  These signals, which pass through almost any physical obstruction, are purportedly detected by the device even at significant distances
Ttherefore, if the company's claims are true, their device will radically improve emergency teams ability to locate quickly people who are trapped within the wreckage of collapsed buildings
The device gives a distinctive reading when the signals it detects come from human beings rather than from any other living beings.