Interesting concept - I think the primary limitation here conceptually is that a viewer doesn't actually have to look for perspective/tilt to view the image. Kind of along the lines of hypnotism - a strong willed adversary can recognize a hypnotism attempt on their own terms. Also, in terms of "virus glyphs" and the Snowcrash dream, there's no clear connection (and possibly many limitations) between perspective flips and whatever meaningful result one desires in a viewer's mind. That said, very interesting work.