Regarding ID Cards, currently if you are stopped, you could be either taken into custody for questioning or asked to go to your local police station within a certain number of days. These cards would essentially negate this requirement to go to a police station as essentially the card is bringing together current databases into a single database, rather than many which opens the chances of greater corruption and inacurracies. What I'm against is the cost and I personally believe the card should go further, ie an all encompassing passport/drivers licence, etc which again means fewer databases delays for the person in question. On the continent, ID cards have been used and Britain used to have them only until 'recently'. In the ideal world, we wouldn't need these things because nobody would do no wrong, but generally I believe the card is about the amalgamation of databases and creating a system that is less open to corrupt influences due to less access to these multiple databases.