In each case, it will be a matter for the authority providing a public service to consider whether it is in its interests to have an ID card system. For example, if Camden council decides that it is beneficial to Camden council to have a different form of ID check in its libraries from the system that currently exists to ensure that people do not steal books, it will decide to put in the readers that are necessary. We are not requiring the authorities to do it; no one says that they have to do it. They will make a decision. [Interruption.] I hear a sedentary intervention saying that we are requiring people to carry cards. That is simply untrue, as I have said before, and that is precisely the point about this whole approach. My point, and it is a very serious point when we look at the benefits, is that each organisation will make its own assessment as to whether there is a benefit in having an ID card system.