Analysis of information sources in references of the Wikipedia article "National identity cards in the European Economic Area" in English language version.
{{cite web}}: CS1 maint: archived copy as title (link)As ID cards are less bulky and usually cheaper than passports, ID card ownership is much more widespread than passport ownership and tens of millions of journeys involving entry to the EU territory are made every year using ID cards.
For instance Italian and Greek paper ID cards are frequently rejected at certain border checks (e.g. in UK, Germany and Spain). The fact that border control officials are not always familiar with the various identity documents in circulation can also result in more profound consequences, or at least, delays and inconvenience for citizens when exercising their right of free movement due to lengthy document checks.
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