Having worked for companies trying to detect mobile phones this would be about as useful as guessing. Triangulating a signal (if you could even get one from und

Having worked for companies trying to detect mobile phones this would be about as useful as guessing. Triangulating a signal (if you could even get one from under 2 tons of rubble) is not an easy task in the real world, especially one that would need to be accurate to within 1m or so.