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He used his own finger (which was previously used to set the security) so I'm a little skeptical would be interesting to get a hold of a friends and try this out though.

Finger prints can be obtained everywhere with decent SE skills.
He just proved the point that its possible

I understand that but my point is that the tape he is using is clear by the look of it, it could just as easily be reading his print through the tape. Don't get me wrong I hope Apple have failed, I'm just not entirely convinced through this video.