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For example, if someone put their hand on an iPad screen, is there anyway to shade in the areas of the hand so you see a hand print?

Scott
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You can detect where the finger-tips are using the -[UITouch locationInView:] method, but you can't get the outline of the whole hand. The iPad cannot sense this.

kennytm
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  • There is a private API that will give you the approximate size of the touch. Using it will get you rejected from the app store. http://stackoverflow.com/questions/2103447/is-there-any-way-at-all-that-i-can-tell-how-hard-the-screen-is-being-pressed – rob mayoff Jan 31 '12 at 20:09
  • @robmayoff: Yes, but that's still a property of the fingers, not the whole hand. – kennytm Jan 31 '12 at 20:10