After the 'Additional Protocol to the Sangatte Protocol' was signed by France and the United Kingdom on 29 May 2000, juxtaposed controls were set up in the station. Eurostar passengers travelling to the UK clear exit checks from the Schengen Area (carried out by the French Border Police) as well as UK entry checks (conducted by the UK Border Force) in the station before boarding their train. PARAFE self-service gates are available in the station which eligible passengers (EU, EEA and Swiss citizens aged 12 or above holding biometric passports) can use to clear French exit immigration checks (instead of a staffed counter). ePassport gates have also been installed in the station, which eligible passengers (UK, EU, EEA, Swiss, Australian, Canadian, Japanese, New Zealand, Singaporean, South Korean and United States citizens (as well as other foreign nationals who have applied for the Registered Traveller scheme) aged 12 or over holding biometric passports) can use to clear UK entry immigration instead of a staffed counter.