Unfortunately, nearly all the posts here, both for and against, make the mistake of sensibly and logically assessing the merits or otherwise of the new card system. That is something the goverment has never done. Logic has nothing to do with this. This is a desperate grasp at saving face by the discredited home secretary of a floundering government.
This wouldn't have prevented ANY of the recent terrorist attacks but that isn't going to stop them playing their bogus security card for all it's worth.