NASA's FINDER can detect a heartbeat through 30 feet of debris, 20 feet of concrete, or from 100 feet away in the open air. The device can pinpoint the location of a live person to a five-foot range. FINDER can even tell the difference between animal and human heartbeats; so, precious man-hours won't be wasted trying to free a trapped goat from a fallen building, when saving a person trapped under the same debris would be a better use of man-power.
FINDER is only a prototype at the moment, and NASA has plans to market the tool commercially.""







