I certainly do. Outside of my research, as the chair indicated, I was a member of the U.S. army. I served both in Iraq and Afghanistan. We used biometrics in those places with great effect in terms of keeping track of individuals we needed to be keeping track of. I know the United Kingdom has incorporated something similar, a biometrics procedure, in order to enter the country.
However, I know that there have also been significant problems. I can't speak to those in very much detail, but I know that they have had some problems implementing it and determining who they're going to be scanning when they come into the country, and who still needs to go to speak one-on-one with a border official.