The system, which will replace passport stamping, took effect on Sunday (12 October) and will require travellers to the union to register biometrics – fingerprints and a facial scan – the first time they cross an external EU border.
These details will remain on file for a rolling three-year period, or until the passport expires.
Some 61% of respondents to Abta's latest Holiday Habits survey, carried out in the summer, who are due to travel in the next 12 months told the association they were aware of EES taking effect.
Abta described the findings as encouraging, especially as the launch of EES will be phased over a six-month period.