Almost!

I tried it on my iphone4 but it works almost. Basically you can "scan" by showing shiny metals to the cAmera.. But I put a sheet ontop of the metal object and it didnt even show that it was metal.. I liked the idea but its flawed.. Fun but not useful. I doubt you have to scan metal you have to see.

LibiMuffin about Metal Detector (PRO), v1.1