The reasonng is probably very simple, actually. There fewer types of ID that have to be accepted, the more chance that signs of a fake will be noticed. There are already 50 states' worth of driving licences to cope with, so at least passports follow an internationally agreed format.
For travel within the Schengen area, national ID cards and driving licences are accepted as well as passports. Again, there are a limited number of these to cope with and local officials can therefore be briefed about each one. (FWIW, there are no English speaking countries in Schengen, even though two - the UK and the Republic of Ireland - are in the EU.)
For travel within the Schengen area, national ID cards and driving licences are accepted as well as passports. Again, there are a limited number of these to cope with and local officials can therefore be briefed about each one. (FWIW, there are no English speaking countries in Schengen, even though two - the UK and the Republic of Ireland - are in the EU.)
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