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That attack is more useful against a mosaic than a straight blur. In this case, to attack successfully, the attacker would have to lay out every possible passport with the letters in the exact position as they'd be printed, because there is a pretty strong blur applied. You have an F and the line of < characters to work with, you know about how long her given and surnames are, and you have a frame of reference for the rest based on how much of the bottom line the author had to blur. Not much else. You also don't have a guarantee that the blur is straight out of Photoshop and contains what you are trying to reverse; looking at it, I don't think it is the actual passport data. I think it was modified then blurred.

I'm happy to be proven wrong, but I think this one is impractical.




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