The train operator is working with tech firm iProov to provide SmartCheck which allows passengers to complete secure ticket verification and UK passport exit checks on their mobile devices prior to travel. The SmartCheck service was launched at St Pancras station on Monday (6 December).

The trial will allow Business Premier and Carte Blanche ticket holders to scan identity documents using iPhones before arriving at the station, as well as completing a biometric face scan to verify they are the genuine holder of the document.

Passengers will use a dedicated SmartCheck lane at the station when they will undergo a face scan at the ticket gate to verify that they have completed the ticket check, with no sharing of paper or electronic tickets.

A second face scan at the UK exit check will allow Eurostar to check the passenger has completed their passport information with no need to hand over any documents.

Gareth Williams, strategy director and company secretary at Eurostar, said: “We are committed to working closely with governments to introduce new tools and technology that streamline the check in and border process.

“Face biometric technology, which we start trialling today, is a fast and contactless solution which will enable secure passenger checks to take place more efficiently and provide a seamless start to the Eurostar customer journey.”