[1][2] PARAFE self-service gates have been installed at a number of border crossing points to facilitate passage for eligible travellers (European Economic Area, Andorran, Monegasque, San Marinese and Swiss biometric passport holders aged 18 or over).
Metropolitan France's only land border with a non-Schengen country is with Andorra, while the Channel Tunnel forms a railway link with the United Kingdom.
In the 1991 Sangatte Protocol, France signed an agreement with the United Kingdom to introduce 'juxtaposed controls' (in French, des bureaux de contrôles nationaux juxtaposés, or 'BCNJ') at Eurostar and Eurotunnel stations.
When travelling from the UK to France by Eurotunnel, French immigration and customs checks both take place on British soil before boarding the train.
In 2003, France signed an agreement with the United Kingdom to introduce 'juxtaposed controls' (in French, des bureaux de contrôles nationaux juxtaposés, or 'BCNJ') at Dover on the British side and at Calais, Dunkirk and Boulogne-sur-Mer on the French side.