They're not really "unblurring" the images. They had to have a database of 10s-100s of candidate faces to match against. If you know that the blurred person is

They're not really "unblurring" the images. They had to have a database of 10s-100s of candidate faces to match against. If you know that the blurred person is one of 400 people you've already got photos of, there are probably plenty of conventional ways you can identify them other than from their blurred face. This doesn't sound like as impressive a result as the title implies.