This is a simple idea that will save hundreds of people. One of my friends is a very passionate metal detectorist. He enjoys going on beaches and looking for expensive metals in the sand. Personally, I would think that it would be very cumbersome to bring a giant metal detector around a beach. To help my friend, I decided I wanted to make a metal detecting shoe for him. All he would have to do is walk around with these shoes on and it would detect the metal.