As a quick addition to that, I think biometrics is something we need to look at very clearly. But I think we're at an interim step.
Ultimately the biometric that will define activities and travel in the world is probably going to be DNA-based, but until we get to that time, we are reliant on databases. The more integrated they are, the more capable they are of exchanging multiple degrees of data on who allegedly claims to be who they say they are, and the more useful they will be to our defence.