Identity Cards Bill

I thank my right hon. Friend for responding to our conversation last week in written form, which I received this morning. However, the letter says: "““We are designing the scheme in such a way that there is no direct access to the Register itself by organisations—Government or non-Government—who want to verify a card-holder’s identity. Organisations will be able to use an identity verification service to verify basic identity information””." What is the difference between the register and the identity verification service?