There are countries around the world that do this: Australia and New Zealand are a couple of examples. I was just in Belgium, and Brussels has an exit program as well. A couple of perspectives: to the extent that Canada wanted to adopt this program, it would be a significant policy decision on the part of the government. I think it would require careful consideration and close scrutiny.
That said, we have had ongoing discussions with our colleagues to the south, in our sister agency in the United States, on the possibility of implementing a program that would basically see at the land border our entry system used as their exit system and vice versa. There has been consideration of how it might work. It would be a lot more streamlined and probably a lot simpler at airports. It would simply be another stop on your way to the gate. I think we have a sense of how it could work, and as and when the policy discussion on this occurs, I think we'd be ready to give some advice on that.