I watched Charlie's Angels where Natalie got pass a retinal scan using contact lenses. Aside from the obvious mistake that the retina and iris are two completely different things, would it be possible to fool an iris scanner with fake contact lenses?
Added (1). I'm not sure, but perhaps they etched someone else's pattern onto the contact lenses. Ah well, it's probably only a Hollywood trick.
>>> Disguising iris pattern with contact lenses?