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Intelligent Gadget's Magnetic Anomaly Detector (MAD) measures differences in magnetic field strength using the iPhone 3GS magetometer. Monitor changes in Earth's magnetic field. Drag it across a wall to find nails in studs. Interested in the paranormal or UFOs? Use it to investigate anomalous phenomena. ‎- ati
Я это из истории про английского ловца лис извлек. Он ловил на iphone. ‎- ati