This is a great father's day gift...either to give to or use on Dad!
Open the app and hold it over your hand, the screen of your phone shows an x-ray image of a hand, so it LOOKS like the phones is looking through your skin, right to the bone. You can scroll the image as you scan over your hand. This is not a REAL x-ray, just a picture. The recently released Update 1.2 includes scans of either hand, either foot, a chest or a skull.
Fool your dad or let your dad fool his grand-kids (and then buddies)!