On the assumption that if I allowed you to pass over me, Mr. Hood, I might not be called after the hon. Member for South Down has spoken, I shall make my points, and he will be able to pick up the bits that I have left behind.
The information will not, of course, immediately confirm a signature on the day of an election, because the polling staff will not be in a position to make those checks. However, it would have the effect of being almost a complete deterrent. If one knew that a permanent record of one's signature could be tested against that, the authorities could go back and check that the signatures match.