Tour operators across Europe are raising serious concerns over growing congestion at EU borders following the introduction of mandatory fingerprint scanning for citizens from non-EU countries. According to the tourism association United Future for Tourism, buses carrying tourists — including large groups of children traveling to summer camps — are being held at border checkpoints for between 8 and 18 hours.

Europe fully launched its new Entry/Exit System this spring, and some travelers are facing its growing pains.

Tour operators across Europe are raising serious concerns over growing congestion at EU borders following the introduction of mandatory fingerprint scanning for citizens from…