Not to defend anything that's currently going on, but you have to consider the possibility of a dispute at the border over whether someone is a citizen or not.
Honestly, this is why I don't complain very much about biometrics and databases, because the realistic alternative (potentially being detained at the border while they try to guess whether your passport is forged/altered/stolen) is much worse.
Honestly, this is why I don't complain very much about biometrics and databases, because the realistic alternative (potentially being detained at the border while they try to guess whether your passport is forged/altered/stolen) is much worse.