The big problem is that once you have an ID card, you are who it (and the computer) says you are. If any of the data are wrong, then you will have a big problem trying to prove it is incorrect. It also works the other way, with a fake ID. If it claims you are Mr. J. Bloggs, then that is who you are, even if in reality you are Mr. O. B Laden.
There will be errors, there will be fakes; it's only a matter of time.