I can start, because there's some irony in what you've just said. In the U.S., there's a National Academy of Sciences report that has been tabled recently in which they are criticizing American laboratories in particular, and also criticizing fingerprint science because it's not as good as DNA and hasn't been approached with the scientific rigour of DNA. So there's some irony in what you say there, because we are being faced with those challenges.
But it's two different things. For the fingerprint you're looking at, you're trying to find a match to another image and then comparing the two images together. In DNA, you have your matching numbers. You've generated a profile that you can create numbers for to compare, and you're saying that this number exactly matches this number to the extent of the comparisons you have. Then you go on to evaluate the significance of that match and the chance of finding another randomly selected individual who will have that match.
I'll ask John to go into the specifics.