This patent is extremely technically weak. I have seen more interesting approaches to copy-protecting 3D-printed objects: http://www.cs.purdue.edu/cgvlab/paper

This patent is extremely technically weak. I have seen more interesting approaches to copy-protecting 3D-printed objects: http://www.cs.purdue.edu/cgvlab/papers/aliaga/eg2009.pdf http://www.cs.purdue.edu/cgvlab/papers/aliaga/eg2009.pdf (One of the authors on that paper was my advisor in college).