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					Originally Posted by  knc1
					 
				 
				anything with a straight edge - 
even a sheet of paper - 
look between back and edge of paper standing "on edge" (hold it) - 
as if you where looking for a crack in the door. 
 
Our signature certificate is still on the device, you can re-install everything if you wish. 
			
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 I used a good set square I have here at home and looked very hard, but still I couldn't see any "bump" on the back of the device. 
I think it's actually flat, like a normal one should be.