It's not as effective as, shall we say, human intelligence. My research has not indicated that there's any reason we ought to simply be jumping on board the use of biometrics.
I'm well aware that law enforcement agencies tend to be reasonably happy with it, until you get to the sort of high point of it, which I would say is what the AVATAR program at the University of Arizona has come up with, because then it starts taking their jobs away. You clearly and obviously have labour issues at that point.
But in terms of gathering information, it's good to gather information. What you do with it, how interoperable those bits of information are.... I think there are obviously privacy questions as well as questions of reliability. For the most part, I feel that these biometric technologies are relatively under-studied. That's why we're only now getting some of the longer-term studies, which are what is useful.
At the moment, most of the research we get is from the manufacturers themselves, and I don't think I need to tell everyone that there could be problems with that.